CN111314338A

CN111314338A - Method and device for realizing distributed local sound mixing

Info

Publication number: CN111314338A
Application number: CN202010087416.7A
Authority: CN
Inventors: 欧朋; 强亮; 徐巍; 张世全
Original assignee: Fiberhome Telecommunication Technologies Co Ltd
Current assignee: Fiberhome Telecommunication Technologies Co Ltd
Priority date: 2020-02-11
Filing date: 2020-02-11
Publication date: 2020-06-19
Anticipated expiration: 2040-02-11
Also published as: CN111314338B

Abstract

The invention discloses a method and a device for realizing distributed local sound mixing, and relates to the technical field of voice in optical fiber communication. The implementation method is used for a three-party call application scene, the three-party call application scene comprises an OLT connected with a server, and a plurality of optical fiber access devices supporting voice services are hung below the OLT. The implementation method specifically comprises the following steps: when a certain optical fiber access device supporting voice service is used as a host to establish three-party communication service with a device used as a participant, the OLT selects a device with the minimum RTP resource load as a friend device from all devices hung downwards; after the three-party conversation starts, the friend equipment replaces optical fiber access equipment supporting voice service as a host side to complete local sound mixing, and the RTP stream is forwarded. The invention can save the equipment cost, solve the performance problem of concurrency of the three-party conversation conference host at the equipment side and meet the actual application requirement.

Description

Method and device for realizing distributed local sound mixing

Technical Field

The invention relates to the technical field of voice in optical fiber communication, in particular to a method and a device for realizing distributed local sound mixing.

Background

Three-way calling, also known as multi-party calling or conference calling, is a new service based on call waiting and holding. The three-party call can simulate the effect of a live meeting, and firstly, an organizer (namely a conference host) is required to be responsible for organizing the participation of the participants and controlling the conference.

The voice device side three-way call function is the most common local sound mixing. The number of voice paths of MSAN (Multi-service Access Network, Integrated service Access Network) equipment is at least 256, and the requirement of the limit ratio of common voice services is 1: 4, at least 64 paths of common voice concurrency needs to be supported, the functional requirement of three-party call does not have explicit performance requirement, the concurrency capability of a host of the three-party call conference is generally not lower than that of an enterprise gateway device and an FTTB (Fiber to the building) device by default, namely not lower than 8 paths, and one or even multiple voice Dsp (Digital Signal Processing) chips need to be arranged. The voice path number of the home gateway equipment is few, generally not more than 2 paths, and the limit ratio requirement of the common voice service is 1: 1, the concurrency capability limit ratio requirement of a host of the three-party call conference is 1: 1, a Dsp core with a 4-way voice RTP (Real-time Transport Protocol) stream processing capability is built in a main stream PON (Passive Optical Network) chip, which can meet the requirement without a special voice Dsp chip. The voice paths of the government and enterprise gateway equipment and the FTTB equipment are generally 4 paths, 8 paths, 16 paths, 24 paths or 32 paths, and the requirement of the limit ratio of the common voice service is respectively 1: 1. 1: 1. 1: 1. 2: 3. 1: and 2, the requirements of the three-party conversation conference host service concurrent routing number are respectively 4, no more than 8 and no more than 8. However, because the government and enterprise gateway devices face governments and enterprises, the frequency of three-party call is relatively high, so that the requirement of the government and enterprise gateway devices, particularly the government and enterprise gateway devices at a high end, on the service concurrency capability of a three-party call conference host is higher.

At present, aiming at the voice function design of a government and enterprise gateway device and an FTTB device, some manufacturers select to distribute a voice Dsp chip, so that the voice function design method has the advantages that the common voice concurrency requirement and the three-party conference host concurrency requirement can be well met, and the cost is high; some manufacturers adopt a scheme that voice Dsp is built in a PON chip to support double voice path number RTP flow concurrently, and the scheme has the advantages that the common voice concurrent requirements of 4-path and 8-path administrative enterprise gateway equipment and FTTB equipment and the concurrent requirements of three-party call conference hosts can be well met, one of the defects is high cost, and the other defect is that the concurrent requirements of the three-party call conference hosts of 16-path, 24-path and 32-path administrative enterprise gateway equipment and FTTB equipment cannot be met; the scheme of using the PON chip to embed the voice Dsp and concurrently support the RTP flow with the single voice path number has the advantages of low cost and incapability of solving the performance problem of concurrence of the three-party conference host at the equipment side.

Therefore, for the optical fiber access device supporting voice services, which is similar to the government and enterprise gateway device and the FTTB device and has a contradiction between the device cost and the three-party call concurrency performance, how to achieve the purpose of saving the device cost and simultaneously meeting the three-party call concurrency performance requirement on the device side is a problem that needs to be solved urgently by the technical staff in the field.

Disclosure of Invention

The invention aims to overcome the defects of the background technology, and provides a method and a device for realizing distributed local audio mixing, which can save the equipment cost, solve the performance problem of concurrence of three-party conference host sides at the equipment side and meet the actual application requirements.

In order to achieve the above object, the present invention provides a method for implementing distributed local audio mixing, which is used in a three-party call application scenario, where the three-party call application scenario includes an OLT connected to a server, and a plurality of optical fiber access devices supporting voice services are hung below the OLT, and the method includes the following steps:

when a certain optical fiber access device supporting voice service is used as a host to establish three-party communication service with a device used as a participant, the OLT selects a device with the minimum RTP resource load as a friend device from all devices hung downwards;

after the three-party conversation starts, the friend equipment replaces optical fiber access equipment supporting voice service as a host side to complete local sound mixing, and the RTP stream is forwarded.

On the basis of the technical scheme, each optical fiber access device supporting the voice service records the usage amount of the RTP resource in real time; the usage amount of the RTP resource is defaulted to zero, when the optical fiber access equipment supporting the voice service is provided with a port off-hook open channel, the usage amount of the RTP resource is added with 1, and when the optical fiber access equipment supporting the voice service is provided with a port on-hook close channel, the usage amount of the RTP resource is reduced by 1;

the OLT selects the equipment with the minimum RTP resource load as the friend equipment from all the equipment hung downwards, and specifically comprises the following steps: the OLT acquires the RTP resource usage of all the hung-down devices; and selecting the equipment with the minimum RTP resource usage as the friend equipment by comparing the sizes of the RTP resource usage.

On the basis of the technical scheme, each optical fiber access device supporting voice service is provided with a digital number; and when the OLT selects the equipment with the minimum RTP resource usage as the adjacent equipment by comparing the sizes of the RTP resource usage, if the number of the equipment with the minimum RTP resource usage is more than one, comparing the sizes of the number numbers, and selecting according to the sequence of the number numbers.

On the basis of the above technical solution, when the OLT obtains the usage amounts of the RTP resources of all the devices that are hung down, if no reply or an abnormal reply is obtained from a certain device, the optical fiber access device supporting the voice service is considered as an abnormal device, and the selection of the device is directly excluded.

On the basis of the technical scheme, the OLT maintains a three-party call record table, and the table records a source IP address of host equipment, a POTS port number of the host equipment, a first source UDP port number of the host equipment corresponding to the POTS port, a second source UDP port number of the host equipment corresponding to the POTS port, a source IP address of friend equipment, and a first source UDP port number, a second source UDP port number and a third source UDP port number of the friend equipment for assisting three-party call;

after the three-party call starts, the friend device replaces an optical fiber access device supporting the voice service as a host to complete local sound mixing, and the forwarding of the RTP stream is realized, which specifically comprises the following steps:

after the three-party conversation starts, the host side equipment terminates the RTP flow used for the conversation with the participant side equipment, and reestablishes an RTP flow by using a third source UDP port number corresponding to the POTS port, wherein the RTP flow is used for being communicated with the adjacent equipment;

the adjacent equipment inherits a first source UDP port number and a second source UDP port number of a POTS port corresponding to host equipment according to a three-party call record table maintained by the OLT, and two RTP streams are created for communicating with participant equipment; and a third RTP stream is created by utilizing the third source UDP port number of the RTP stream and is used for being communicated with the third source UDP port number of the POTS port corresponding to the host side equipment, thereby replacing the equipment as the host side to complete local sound mixing and realizing the forwarding of the RTP stream.

The invention also provides a device for realizing distributed local audio mixing, which comprises an OLT connected with the server and a plurality of optical fiber access devices which are hung below the OLT and support voice services. Wherein, each optical fiber access device supporting voice service is provided with a three-party call establishing module and an RTP stream processing module; a friend equipment selection module is arranged in the OLT;

the three-party call establishing module is used for: when acting as a host, a request to establish a three-way call with a participant may be initiated;

the friend device selection module to: when a three-party call service is established, selecting equipment with the minimum RTP resource load as friend equipment from all the hung equipment;

the RTP stream processing module is configured to: when the device is used as a host, after the three-party conversation starts, the RTP stream is forwarded to the adjacent equipment to complete local sound mixing; when the device is used as a friend device, after the three-party conversation starts, the device replaces a host to complete local sound mixing, and the RTP stream after sound mixing is forwarded to the host.

On the basis of the technical scheme, each optical fiber access device supporting voice service is also internally provided with an RTP resource counting module used for recording the usage amount of the RTP resource of the device in real time; the usage amount of the RTP resource is defaulted to zero, when the optical fiber access equipment supporting the voice service is provided with a port off-hook open channel, the usage amount of the RTP resource is added with 1, and when the optical fiber access equipment supporting the voice service is provided with a port on-hook close channel, the usage amount of the RTP resource is reduced by 1;

the friend device selecting module selects a device with the minimum RTP resource load as a friend device from all the devices hung downwards, and specifically comprises the following operations: acquiring the RTP resource usage of all hung-down devices; and selecting the equipment with the minimum RTP resource usage as the friend equipment by comparing the sizes of the RTP resource usage.

On the basis of the technical scheme, each optical fiber access device supporting voice service is provided with a digital number; and when the friend equipment selection module selects the equipment with the minimum RTP resource usage as the friend equipment by comparing the sizes of the RTP resource usage, if the number of the equipment with the minimum RTP resource usage is more than one, the friend equipment selection module compares the sizes of the number numbers and selects the equipment according to the sequence of the number numbers.

On the basis of the above technical scheme, when the friendly equipment selection module obtains the usage amount of the RTP resources of all the hung-down equipment, if the reply of a certain equipment cannot be obtained or an abnormal reply is obtained, the optical fiber access equipment supporting the voice service is considered as abnormal equipment, and the selection of the equipment is directly excluded.

the RTP stream processing module serves as a host, forwards an RTP stream to a neighboring device to complete local audio mixing after a three-party call starts, and specifically includes the following operations: after the three-party conversation starts, an RTP stream processing module of the host side equipment terminates the RTP stream used for the conversation with the participant side equipment, and a third source UDP port number corresponding to a POTS port of the equipment of the host side equipment is utilized to reestablish an RTP stream for communicating with the adjacent equipment, so that the RTP stream is forwarded to the adjacent equipment to complete local sound mixing;

the RTP stream processing module, as an adjacent device, replaces a host to complete local audio mixing, and forwards an RTP stream after audio mixing to the host, and specifically includes the following operations: an RTP stream processing module of the adjacent equipment inherits a first source UDP port number and a second source UDP port number of a POTS port corresponding to host equipment according to a three-party call record table maintained by the OLT, and creates two RTP streams for communicating with the participant equipment; and a third RTP stream is created by using a third source UDP port number of the equipment, and is used for intercommunication with a third source UDP port number of a POTS port corresponding to the equipment of the host side, so that the equipment serving as the host side is replaced to complete local sound mixing, and the RTP stream after sound mixing is forwarded to the host side.

The invention has the beneficial effects that:

(1) in the invention, the local audio mixing is completed by the adjacent equipment with lighter RTP stream burden under the same networking environment, the distributed use of the RTP streams under the whole networking environment can be achieved, the RTP stream resources of the equipment where a host of a three-party conversation conference is positioned are saved, the concurrence performance requirement on the voice RTP streams of the equipment is further reduced, and the equipment cost is finally reduced.

(2) The invention only relates to RTP stream forwarding, but not to voice signaling interaction, and is simpler to realize.

(3) In the invention, no special mixing agent equipment is needed to be arranged, and any optical fiber access equipment supporting voice service can become the mixing agent equipment, namely the mixing agent is a dynamic agent, and the normal work of other equipment is not influenced by the abnormality of any equipment, so that the reliability is high. Moreover, each optical fiber access device supporting voice services can be directly connected with a user, and one device does not need to be wasted by occupying a certain device as a sound mixing agent device, so that the effective utilization rate of the device can reach 100%.

Drawings

FIG. 1 is a schematic diagram of a triple-party call application scenario;

fig. 2 is a flowchart of a method for implementing distributed local mixing according to an embodiment of the present invention;

fig. 3 is a schematic diagram of RTP flow direction when a friend device completes local mixing instead of a host in an example.

Detailed Description

Aiming at the prior art, the cost of laying out a voice Dsp chip is high for the government and enterprise gateway equipment and the FTTB equipment; the scheme for supporting double voice path number RTP flow by adopting the PON chip built-in voice Dsp has higher cost and is only suitable for 4-path and 8-path enterprise gateway equipment/FTTB equipment; although the scheme of simultaneously supporting single-voice path number RTP flow by adopting the PON chip built-in voice Dsp has cost advantage, the problem of the concurrent performance of the three-party conference host at the equipment side cannot be solved. The invention aims to provide a method and a device for realizing distributed local sound mixing, which can save the equipment cost and solve the problem of the concurrency of a three-party call conference host at the equipment side for the optical fiber access equipment supporting the voice service, which is similar to a government and enterprise gateway equipment and an FTTB (fiber to the television) equipment and has the contradiction between the equipment cost and the concurrency of three-party calls, thereby meeting the actual application requirements.

The main design concept is as follows: when there is a service of a host side in a three-party call conference, an OLT (Optical line terminal) selects a device with the minimum RTP resource load as a neighboring device from all current Optical fiber access devices supporting a voice service, and allows the neighboring device to replace the device where the host side is located to complete local audio mixing, and retransmits the RTP after audio mixing to the device where the host side is located.

Because the local sound mixing is not completed on the equipment where the three-party conversation conference host is located, but is completed on the adjacent equipment under the same networking, the distributed use of the RTP stream under the whole networking environment can be achieved, the RTP stream resource of the equipment where the three-party conversation conference host is located is saved, and the concurrent performance problem of the three-party conversation conference host at the equipment side is solved. Moreover, by using the method, the optical fiber access equipment (such as government and enterprise gateway equipment and FTTB equipment) supporting the voice service can adopt a scheme that the PON chip is internally provided with the voice Dsp and supports the single voice path number RTP flow, thereby saving the cost.

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

However, it should be noted that: the examples to be described next are only some specific examples, and are not intended to limit the embodiments of the present invention necessarily to the following specific steps, values, conditions, data, orders, and the like. Those skilled in the art can, upon reading this specification, utilize the concepts of the present invention to construct more embodiments than those specifically described herein.

Example one

The embodiment provides a method for realizing distributed local sound mixing, which is used for a three-party call application scene. Referring to fig. 1, the triple-party call application scenario includes an OLT connected to a server, and a plurality of optical fiber access devices supporting voice services are hung below the OLT. Referring to fig. 2, the method for implementing distributed local mixing includes the following steps:

A. when a certain optical fiber access device supporting voice service is used as a host to establish three-party communication service with a device used as a participant, the OLT selects a device with the minimum RTP resource load as a friend device from all devices hung downwards;

B. after the three-party conversation starts, the friend equipment replaces optical fiber access equipment supporting voice service as a host side to complete local sound mixing, and the RTP stream is forwarded.

It can be seen from the above operations that, in this embodiment, the local audio mixing is not completed on the device where the three-party conference host is located, but is completed on the neighboring device under the same networking, so as to achieve distributed usage of the RTP streams under the whole networking environment, save RTP stream resources of the device where the three-party conference host is located, and solve the concurrent performance problem of the three-party conference host at the device side. Moreover, by using the method of this embodiment, an optical fiber access device (such as a government and enterprise gateway device and an FTTB device) supporting voice services may adopt a scheme in which a PON chip embeds voice dsps and supports a single voice path number RTP stream, thereby saving cost.

It is understood that, in practical applications, the optical fiber access device supporting voice services is preferably an optical fiber access device supporting voice services of the type having a contradiction between the equipment cost and the three-party call concurrency performance, and includes but is not limited to: a government and enterprise gateway device, an FTTB device, etc. In addition, it can be understood that the optical fiber access device supporting the voice service as a participant may be any device under the OLT, or may be any device under another server and the OLT.

Further, in practical application, a certain optical fiber access device supporting voice service is used as a host to establish a three-way call service with an optical fiber access device supporting voice service as a participant, and the method specifically includes the following operations:

(1) a certain optical fiber access device supporting voice service is used as a host side to pick up a hook and open a channel, then the device of a first participant is dialed, and the device of the first participant picks up the hook and opens the channel after ringing to establish conversation;

(2) the host equipment is forked to keep the conversation with the first participant equipment, and meanwhile, the host flag position of the existing three-party conversation conference is set to be true and sent to the OLT; after receiving a host zone bit of the three-party call conference sent by host equipment, the OLT terminates RTP flow between the OLT and the host equipment;

(3) the host side equipment dials the special dial tone, the optical fiber access equipment supporting the voice service of the second participant side is dialed, and the second participant side equipment is hooked off and opened after ringing to establish communication.

Example two

The basic steps of the method for implementing distributed local mixing provided by this embodiment are the same as those in the first embodiment, except that, as an optional implementation manner, in this embodiment, each optical fiber access device supporting a voice service records the usage amount of its own RTP resource in real time. The usage amount of the RTP resource is default to zero, and after the optical fiber access equipment supporting the voice service is provided with a port off-hook open channel, the usage amount of the RTP resource is added by 1; when the optical fiber access equipment supporting the voice service has a port on-hook closed channel, the usage amount of the RTP resource is reduced by 1.

On this basis, in step a of the method, the OLT selects the device with the smallest RTP resource load as a friend device from all the devices hung down, and specifically includes the following steps: the OLT acquires the RTP resource usage of all the hung-down devices; and selecting the equipment with the minimum RTP resource usage as the friend equipment by comparing the sizes of the RTP resource usage.

It can be understood that, in this embodiment, when the OLT obtains the usage amounts of the RTP resources of all the devices that are hung down, a mode of calling as needed is adopted, that is, only when the friend device needs to be selected, the corresponding usage amounts of the RTP resources are obtained from the optical fiber access devices that support the voice service, and at ordinary times, the optical fiber access devices that support the voice service only need to perform real-time maintenance on the usage amounts of the RTP resources. For the OLT, because the read-back time of the usage amount of the RTP resource is short, the OLT can read at any time without additionally creating a new task, and the resource consumption of the OLT can be ignored.

Further, in this embodiment, each optical fiber access device supporting voice services is provided with a number. On the basis, when the OLT selects the optical fiber access equipment supporting the voice service with the smallest RTP resource usage as the adjacent equipment by comparing the RTP resource usage, if the number of the equipment supporting the voice service with the smallest RTP resource usage is more than one, the OLT compares the number of the equipment supporting the voice service with the smallest RTP resource usage and selects the equipment according to the sequence of the number. In actual operation, when the selection is performed according to the sequence of the number, a unified selection rule agreed in advance can be followed. For example, the contract priority number may be large (i.e., selected in order of large to small), or the contract priority number may be small (i.e., selected in order of small to large). In this embodiment, as a preferred embodiment, selection is performed according to a selection rule with a small priority number.

Further, when the OLT obtains the usage amounts of the RTP resources of all the devices that are hung down, if no reply or an abnormal reply is obtained from a certain device, the optical fiber access device supporting the voice service is considered as an abnormal device, and the selection of the device is directly excluded.

EXAMPLE III

The basic steps of the method for implementing distributed local audio mixing provided by this embodiment are the same as those of the first embodiment, and the difference is that, as an optional implementation manner, the OLT maintains a three-party call record table, where the table records a source IP address of a host device, a POTS (Plain Old Telephone Service) port number of the host device, a first source UDP (User Datagram Protocol) port number of the host device corresponding to the POTS port, a second source UDP port number of the host device corresponding to the POTS port, and a source IP address of a friend device, and a first source UDP port number, a second source UDP port number, and a third source UDP port number of the friend device used for assisting in a three-party call.

On this basis, in step B of the method, the friend device replaces the optical fiber access device supporting the voice service as the host to complete local audio mixing, and the forwarding of the RTP stream is realized, specifically including the following steps:

1) after the three-party conversation starts, the host side equipment terminates the RTP flow used for the conversation with the participant side equipment, and reestablishes an RTP flow by using a third source UDP port number corresponding to the POTS port, wherein the RTP flow is used for being communicated with the adjacent equipment;

2) the adjacent equipment inherits a first source UDP port number and a second source UDP port number of a POTS port corresponding to host equipment according to a three-party call record table maintained by the OLT, and two RTP streams are created for communicating with participant equipment; and a third RTP stream is created by utilizing the third source UDP port number of the RTP stream and is used for being communicated with the third source UDP port number of the POTS port corresponding to the host side equipment, thereby replacing the equipment as the host side to complete local sound mixing and realizing the forwarding of the RTP stream.

In order to more clearly understand the method of the present invention, the method of the present invention will be illustrated below with reference to all the features of the first to third examples. In this example, the optical fiber access device supporting the voice service is a government and enterprise gateway device with 8 voice paths, 10 government and enterprise gateway devices are hung under the OLT, and all POTS ports of each government and enterprise gateway device enable a three-party call service, that is, each voice port can be used as a conference host. When the service configuration is normal, all the voice ports are in an on-hook state, and the usage amount of the RTP resource is 0, which is recorded as RTP _ Cnt being 0. Assuming that a three-party call needs to be established at a first government and enterprise gateway device port 1, a second government and enterprise gateway device port 1 and a third government and enterprise gateway device port 1, wherein the first government and enterprise gateway device port 1 is a conference host, the method for realizing distributed local sound mixing comprises the following steps:

s1, the port 1 of the first government and enterprise gateway device goes off hook to open the channel, and adds 1 to the RTP resource usage, and records as Dev1_ RTP _ Cnt as 1.

S2, the port 1 of the first government and enterprise gateway device dials the port 1 of the second government and enterprise gateway device, the port 1 of the second government and enterprise gateway device rings and then goes off hook to open the channel to establish a call, and adds 1 to the usage amount of the RTP resource, which is recorded as Dev2_ RTP _ Cnt as 1. At this time, the RTP stream goes to: a first source UDP port number of a first government enterprise gateway device port 1 is < - >, OLT < - >, a server < - >, OLT < - >, a second government enterprise gateway device port 1 is a source UDP port number. Meanwhile, the OLT records a source IP address of the first-party government and enterprise gateway device, a POTS port number (port 1) of the first-party government and enterprise gateway device and a first source UDP port number of the port 1 of the first-party government and enterprise gateway device in a maintained three-party call record table.

S3, a port 1 of the first-party government and enterprise gateway device is tapped to keep the conversation with the second-party government and enterprise gateway device, and meanwhile, the position of the existing three-party conversation conference host flag is set to be true and is sent to the OLT; and after receiving the three-party conference host zone bit sent by the port 1 of the first-grade government enterprise gateway equipment, the OLT terminates the RTP flow between the OLT and the port 1 of the first-grade government enterprise gateway equipment. At this time, the RTP stream goes to: OLT < -server < -OLT < -second government gateway device port 1 source UDP port number.

S4, special dial tone is played at port 1 of the first government and enterprise gateway device, port 1 of the third government and enterprise gateway device is dialed, the port 1 of the third government and enterprise gateway device rings and then goes off hook to open a channel to establish communication, the RTP resource usage amount is added with 1, and the result is recorded as Dev3_ RTP _ Cnt being 1. At this time, the RTP trend is: (1) OLT < -server < -OLT < -second number government and enterprise gateway device port 1 source UDP port number; (2) and the second source UDP port number of the first government enterprise gateway device port 1 is < - >, OLT < - >, server < - >, OLT < - >, and the third government enterprise gateway device port 1 is the source UDP port number. Meanwhile, the OLT records a second source UDP port number of the port 1 of the first-party government and enterprise gateway device in a maintained three-party call record table.

S5, the OLT acquires corresponding RTP resource usage from 10 sets of government and enterprise gateway devices hung under the OLT, and respectively obtains Dev1_ RTP _ Cnt 1, Dev2_ RTP _ Cnt 1, Dev3_ RTP _ Cnt 1 and RTP resource usage of the rest of government and enterprise gateway devices as 0, and then selects the four-number government and enterprise gateway devices as friend devices for three-party call of the port 1 of the first-number government and enterprise gateway device.

S6, the port 1 of the first government and enterprise gateway starts three-party communication through the clapping of 3 or other operation requirements, and meanwhile, the position of the three-party communication starting flag existing in the port 1 of the first government and enterprise gateway is set to be true and is sent to the OLT; the first government-enterprise gateway equipment terminates the RTP flow used for the conversation with the third government-enterprise gateway equipment, and reestablishes an RTP flow (a third source UDP port number of a port 1 of the first government-enterprise gateway equipment) for communicating with the fourth government-enterprise gateway equipment; meanwhile, the fourth government-enterprise gateway device inherits a first source UDP port number (a first source UDP port number) and a second source UDP port number (a second source UDP port number) of the port 1 of the first government-enterprise gateway device according to a three-party call record table maintained by the OLT, creates two RTP streams, and creates a third RTP stream (a third source UDP port number of the fourth government-enterprise gateway device) for being communicated with a third source UDP port number of the port 1 of the first government-enterprise gateway device, so that the first government-enterprise gateway device is replaced to complete local sound mixing, and the RTP streams are forwarded. At this time, as shown in fig. 3, the RTP stream goes to: (1) a third source UDP port number of the first-government-enterprise gateway device port 1 < - > OLT (a source IP address of a fourth-government-enterprise gateway device which is a friend device is found by using mapping information of a first-government-enterprise gateway device source IP address in a record table) < - > a third source UDP port number of the fourth-government-enterprise gateway device < - > OLT-server < - > OLT < - > a second-government-enterprise gateway device port 1 source UDP port number; (2) the third source UDP port number of the first-government-enterprise gateway device port 1 < - > OLT (the source IP address of the fourth-government-enterprise gateway device which is a friend device is found by using the mapping information of the first-government-enterprise gateway device source IP address in the record table) < - > the third source UDP port number of the fourth-government-enterprise gateway device < - > the second source UDP port number of the fourth-government-enterprise gateway device < - > OLT < - > server < - > OLT < - > the third-government-enterprise gateway device port 1 source UDP port number, and three-party call establishment is carried out.

Example four

Based on the same inventive concept, the embodiment of the present invention further provides an apparatus for implementing distributed local audio mixing, including an OLT connected to a server and a plurality of optical fiber access devices supporting voice services and hanging down from the OLT. A three-party call establishing module and an RTP stream processing module are arranged in each optical fiber access device supporting voice services; and a friend equipment selection module is arranged in the OLT.

Wherein, the three-party call establishing module is used for: when acting as a host, a request to establish a three-way call with a participant may be initiated. A friend device selection module to: when a three-party call service is established, the equipment with the minimum RTP resource load is selected as friend equipment from all the equipment hung down. An RTP stream processing module to: when the device is used as a host, after the three-party conversation starts, the RTP stream is forwarded to the adjacent equipment to complete local sound mixing; when the device is used as a friend device, after the three-party conversation starts, the device replaces a host to complete local sound mixing, and the RTP stream after sound mixing is forwarded to the host.

EXAMPLE five

The basic structure of the device for implementing distributed local audio mixing provided by this embodiment is the same as that of the fourth embodiment, and the difference is that: each optical fiber access device supporting voice service is also provided with an RTP resource counting module used for recording the usage amount of the RTP resource thereof in real time. The usage amount of the RTP resource is default to zero, when the optical fiber access equipment supporting the voice service is provided with a port off-hook open channel, the usage amount of the RTP resource is added with 1, and when the optical fiber access equipment supporting the voice service is provided with a port on-hook close channel, the usage amount of the RTP resource is reduced with 1.

On this basis, the friend device selecting module selects the device with the smallest RTP resource load as the friend device from all the devices hung below, and specifically includes the following operations: acquiring the RTP resource usage of all hung-down devices; and selecting the equipment with the minimum RTP resource usage as the friend equipment by comparing the sizes of the RTP resource usage.

Further, in this embodiment, each optical fiber access device supporting voice services is provided with a number. On the basis, when the friend equipment selecting module selects the equipment with the minimum RTP resource usage as the friend equipment by comparing the sizes of the RTP resource usage, if the number of the equipment with the minimum RTP resource usage is more than one, the friend equipment selecting module compares the sizes of the number numbers and selects the equipment according to the order of the number numbers. In actual operation, when the selection is performed according to the sequence of the number, a unified selection rule agreed in advance can be followed. For example, the contract priority number may be large (i.e., selected in order of large to small), or the contract priority number may be small (i.e., selected in order of small to large). In this embodiment, as a preferred embodiment, selection is performed according to a selection rule with a small priority number.

And further, when the friend equipment selection module obtains the RTP resource usage of all the hung-down equipment, if the reply of certain equipment cannot be obtained or an abnormal reply is obtained, the optical fiber access equipment supporting the voice service is considered as abnormal equipment, and the equipment is directly excluded from being selected.

EXAMPLE six

The basic structure of the apparatus for implementing distributed local audio mixing provided in this embodiment is the same as that of the first embodiment, except that the OLT maintains a three-party call record table, where the table records a source IP address of a host device, a POTS port number of the host device, a first source UDP port number of the host device corresponding to the POTS port, a second source UDP port number of the host device corresponding to the POTS port, a source IP address of an adjacent device, and a first source UDP port number, a second source UDP port number, and a third source UDP port number of the adjacent device for assisting a three-party call.

On this basis, the RTP stream processing module serves as a host, and after the three-party call starts, the RTP stream is forwarded to the adjacent device to complete local sound mixing, and the method specifically includes the following operations: after the three-party conversation starts, the RTP stream processing module of the host side equipment terminates the RTP stream used for the conversation with the participant side equipment, and a third source UDP port number corresponding to a POTS port of the equipment of the host side equipment is utilized to reestablish an RTP stream for communicating with the adjacent equipment, so that the RTP stream is forwarded to the adjacent equipment to complete local sound mixing.

The RTP stream processing module, as an adjacent device, replaces a host to complete local audio mixing, and forwards an RTP stream after audio mixing to the host, and specifically includes the following operations: an RTP stream processing module of the adjacent equipment inherits a first source UDP port number and a second source UDP port number of a POTS port corresponding to host equipment according to a three-party call information table maintained by the OLT, and creates two RTP streams for communicating with the participant equipment; and a third RTP stream is created by using a third source UDP port number of the equipment, and is used for intercommunication with a third source UDP port number of a POTS port corresponding to the equipment of the host side, so that the equipment serving as the host side is replaced to complete local sound mixing, and the RTP stream after sound mixing is forwarded to the host side.

Note that: the above-described embodiments are merely examples and are not intended to be limiting, and those skilled in the art can combine and combine some steps and devices from the above-described separately embodiments to achieve the effects of the present invention according to the concept of the present invention, and such combined and combined embodiments are also included in the present invention, and such combined and combined embodiments are not described herein separately.

Advantages, effects, and the like, which are mentioned in the embodiments of the present invention, are only examples and are not limiting, and they cannot be considered as necessarily possessed by the various embodiments of the present invention. Furthermore, the foregoing specific details disclosed herein are merely for purposes of example and for purposes of clarity of understanding, and are not intended to limit the embodiments of the invention to the particular details which may be employed to practice the embodiments of the invention.

The block diagrams of devices, apparatuses, systems involved in the embodiments of the present invention are only given as illustrative examples, and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. As used in connection with embodiments of the present invention, the terms "or" and "refer to the term" and/or "and are used interchangeably herein unless the context clearly dictates otherwise. The word "such as" is used in connection with embodiments of the present invention to mean, and is used interchangeably with, the word "such as but not limited to".

The flow charts of steps in the embodiments of the present invention and the above description of the methods are merely illustrative examples and are not intended to require or imply that the steps of the various embodiments must be performed in the order presented. As will be appreciated by those skilled in the art, the order of the steps in the above embodiments may be performed in any order. Words such as "thereafter," "then," "next," etc. are not intended to limit the order of the steps; these words are only used to guide the reader through the description of these methods. Furthermore, any reference to an element in the singular, for example, using the articles "a," "an," or "the" is not to be construed as limiting the element to the singular.

In addition, the steps and devices in the embodiments of the present invention are not limited to be implemented in a certain embodiment, and in fact, some steps and devices in the embodiments of the present invention may be combined according to the concept of the present invention to conceive new embodiments, and these new embodiments are also included in the scope of the present invention.

The respective operations in the embodiments of the present invention may be performed by any appropriate means capable of performing the corresponding functions. The means may comprise various hardware and/or software components and/or modules including, but not limited to, hardware circuitry or a processor.

The method of an embodiment of the invention includes one or more acts for implementing the method described above. The methods and/or acts may be interchanged with one another without departing from the scope of the claims. In other words, unless a specific order of actions is specified, the order and/or use of specific actions may be modified without departing from the scope of the claims.

The functions in the embodiments of the present invention may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored as one or more instructions on a tangible computer-readable medium. A storage media may be any available tangible media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other tangible medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. As used herein, disk (disk) and Disc (Disc) include Compact Disc (CD), laser Disc, optical Disc, DVD (Digital Versatile Disc), floppy disk and blu-ray Disc where disks reproduce data magnetically, while discs reproduce data optically with lasers.

Accordingly, a computer program product may perform the operations presented herein. For example, such a computer program product may be a computer-readable tangible medium having instructions stored (and/or encoded) thereon that are executable by one or more processors to perform the operations described herein. The computer program product may include packaged material.

Other examples and implementations are within the scope and spirit of the embodiments of the invention and the following claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hard-wired, or any combination of these. Features implementing functions may also be physically located at various locations, including being distributed such that portions of functions are implemented at different physical locations.

Various changes, substitutions and alterations to the techniques described herein may be made by those skilled in the art without departing from the techniques of the teachings as defined by the appended claims. Moreover, the scope of the claims of the present disclosure is not limited to the particular aspects of the process, machine, manufacture, composition of matter, means, methods and acts described above. Processes, machines, manufacture, compositions of matter, means, methods, or acts, presently existing or later to be developed that perform substantially the same function or achieve substantially the same result as the corresponding aspects described herein may be utilized. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or acts.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the invention to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof. And those not described in detail in this specification are within the skill of the art.

Claims

1. A method for realizing distributed local audio mixing is used in a three-party call application scene, the three-party call application scene comprises an OLT connected with a server, and a plurality of optical fiber access devices supporting voice services are hung below the OLT, and the method is characterized by comprising the following steps:

2. The method for implementing distributed local mixing according to claim 1, wherein: each optical fiber access device supporting voice service records the usage amount of RTP resources in real time; the usage amount of the RTP resource is defaulted to zero, when the optical fiber access equipment supporting the voice service is provided with a port off-hook open channel, the usage amount of the RTP resource is added with 1, and when the optical fiber access equipment supporting the voice service is provided with a port on-hook close channel, the usage amount of the RTP resource is reduced by 1;

the OLT selects the equipment with the minimum RTP resource load as the friend equipment from all the equipment hung downwards, and specifically comprises the following steps:

the OLT acquires the RTP resource usage of all the hung-down devices; and selecting the equipment with the minimum RTP resource usage as the friend equipment by comparing the sizes of the RTP resource usage.

3. The method of claim 2, wherein: each optical fiber access device supporting voice service is provided with a number;

and when the OLT selects the equipment with the minimum RTP resource usage as the adjacent equipment by comparing the sizes of the RTP resource usage, if the number of the equipment with the minimum RTP resource usage is more than one, comparing the sizes of the number numbers, and selecting according to the sequence of the number numbers.

4. The method of claim 2, wherein: when the OLT obtains the RTP resource usage of all the hung-down devices, if the reply of a certain device cannot be obtained or an abnormal reply is obtained, the optical fiber access device supporting the voice service is considered as an abnormal device, and the selection of the device is directly excluded.

5. The method for implementing distributed local mixing according to any one of claims 1 to 4, characterized in that: the OLT maintains a three-party call record table, and the table records a source IP address of the host equipment, a POTS port number of the host equipment, a first source UDP port number of the host equipment corresponding to the POTS port, a second source UDP port number of the host equipment corresponding to the POTS port, and a source IP address of the friend equipment, and a first source UDP port number, a second source UDP port number and a third source UDP port number of the friend equipment for assisting the three-party call;

6. A distributed local audio mixing implementation device comprises an OLT connected with a server and a plurality of optical fiber access devices supporting voice services, and is characterized in that: a three-party call establishing module and an RTP stream processing module are arranged in each optical fiber access device supporting voice services; a friend equipment selection module is arranged in the OLT;

7. The apparatus for implementing distributed local mixing according to claim 6, wherein: each optical fiber access device supporting voice service is also provided with an RTP resource counting module used for recording the usage amount of the RTP resource thereof in real time; the usage amount of the RTP resource is defaulted to zero, when the optical fiber access equipment supporting the voice service is provided with a port off-hook open channel, the usage amount of the RTP resource is added with 1, and when the optical fiber access equipment supporting the voice service is provided with a port on-hook close channel, the usage amount of the RTP resource is reduced by 1;

the friend device selecting module selects a device with the minimum RTP resource load as a friend device from all the devices hung downwards, and specifically comprises the following operations:

acquiring the RTP resource usage of all hung-down devices; and selecting the equipment with the minimum RTP resource usage as the friend equipment by comparing the sizes of the RTP resource usage.

8. The apparatus for implementing distributed local mixing according to claim 7, wherein: each optical fiber access device supporting voice service is provided with a number;

and when the friend equipment selection module selects the equipment with the minimum RTP resource usage as the friend equipment by comparing the sizes of the RTP resource usage, if the number of the equipment with the minimum RTP resource usage is more than one, the friend equipment selection module compares the sizes of the number numbers and selects the equipment according to the sequence of the number numbers.

9. The apparatus for implementing distributed local mixing according to claim 7, wherein: and when the friend equipment selection module acquires the RTP resource usage of all the hung equipment, if the reply of certain equipment cannot be obtained or an abnormal reply is obtained, the optical fiber access equipment supporting the voice service is considered as abnormal equipment, and the selection of the equipment is directly excluded.

10. The apparatus for implementing distributed local mixing according to any one of claims 6 to 9, wherein: the OLT maintains a three-party call record table, and the table records a source IP address of the host equipment, a POTS port number of the host equipment, a first source UDP port number of the host equipment corresponding to the POTS port, a second source UDP port number of the host equipment corresponding to the POTS port, and a source IP address of the friend equipment, and a first source UDP port number, a second source UDP port number and a third source UDP port number of the friend equipment for assisting the three-party call;