CN100442883C - System and method for providing telephone access service in wireless network - Google Patents
System and method for providing telephone access service in wireless network Download PDFInfo
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- CN100442883C CN100442883C CNB2005100905122A CN200510090512A CN100442883C CN 100442883 C CN100442883 C CN 100442883C CN B2005100905122 A CNB2005100905122 A CN B2005100905122A CN 200510090512 A CN200510090512 A CN 200510090512A CN 100442883 C CN100442883 C CN 100442883C
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Abstract
The present invention relates to a system and a method for providing telephone access service in a wireless network, which mainly comprises that a wireless communication interface is arranged between a mobile switching center and a fixed access system, and a fixed user terminal is intercommunicated with the mobile switching center through the fixed access system; the fixed access system is in charge of the ascending and descending processing of the fixed user terminal and is intercommunicated with the mobile switching center through the wireless communication interface, and access service is provided for the user terminal by the fixed access system through a wireless network. Thus, the realization of the present invention enables fixed access business to be realized through the reutilization of a wireless core network, and a fixed telephone network does not need being rearranged. The investment of mobile operators is protected, and at the same time, service, such as wireless network roam, etc., is provided for fixed telephones.
Description
Technical field
The present invention relates to the wireless network communication technique field, relate in particular to the system and method that the landline telephone access service is provided in a kind of wireless network.
Background technology
Usually, owned GSM/WCDMA of the mobile operator of wireless network (global mobile communication system/wide-band CDMA) or CDMA (code division multiple access) network.Described mobile communications network can be divided into core net and wireless access network again.As shown in Figure 1, wherein, described core net is made up of MSC (mobile switching centre), GMSC (gateway MSC), HLR (user attaching location register), SCP equipment such as (service control points); Access Network in the GSM/CDMA network is made up of BSC (base station controller), BTS (base transceiver station), and the Access Network of WCDMA is made up of RNC (radio network controller), NODEB (base station); Wherein pass through the A interface communication between MSC and the BSC, pass through the Iu interface communication between MSC and the RNC.
At present, each mobile communications network is specially at mobile device (being mobile phone) design of communication, and landline telephone can't insert the existing network of mobile operator.If mobile operator wishes that landline telephone inserts the network of its operation, promptly mobile operator wishes that then corresponding mobile operator need utilize the existing fixed telephony, rearranges a fixed telephone network for landline telephone provides when service.
Obviously, if rearrange a fixed-line telephone network, then mobile operator can't reuse existing mobile core network equipment, and this will increase the cost of access of landline telephone greatly.And, every business that newly-built fixed-line telephone network still can't utilize existing mobile network to provide, can not realize the fusion of landline telephone and mobile network's business, promptly still can't realize directly the landline telephone access to mobile network is shared the respective services that the mobile network provides.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide the system and method that the landline telephone access service is provided in a kind of wireless network, thereby can insert implementation for wireless carriers provides a kind of fixed telephone terminal easily.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of fixed access system, comprise the fixed base stations that connects user terminal, and connected fixed base stations access module, described system also comprises:
Wireless communication interface, described fixed base stations access module is by described wireless communication interface and wireless network intercommunication;
Described system is behind the off hook signal that detects fixing user terminal; Send the connection management CM service request information of expansion to moving exchanging center MSC by described wireless communication interface; Described system plays the corresponding prompt sound according to the message that MSC returns to fixing user terminal; Described system, asks to set up landline telephone and calls out to the call setup message that MSC sends expansion by described wireless communication interface after detecting user's dialing signal.
Described wireless communication interface comprises:
The wireless communication interface of the wireless communication interface of descending standard and up expansion.
Described wireless communication interface is A interface or Iu interface.
The present invention also provides the method that the landline telephone access service is provided in a kind of wireless network, comprises passing through the wireless communication interface intercommunication between the mobile switching centre in fixed access system and the wireless network, and described method also comprises:
A, detect the off hook signal of fixing user terminal when fixed access system after, then send the connection management CM service request information of expansion to moving exchanging center MSC;
B and the message of returning according to MSC are play the corresponding prompt sound to fixing user terminal.
After C, fixed access system detect user's dialing information, then send the call setup message of expansion to MSC, request is set up landline telephone and is called out.
Described method also comprises:
The continuation dialing information of D, the detected fixing user terminal of fixed access system, and by the expansion informational message send to MSC, collect complete number until MSC.
Described expansion CM service request information is to increase the CM type of service field in the CM request message in wireless network, and being used to indicate this message is the CM request message of being sent by fixing user terminal.
The call setup message of described expansion is that setting up in wireless network increases the call setup message type field and be sent completely field in the message, wherein:
Call setup message type field: be used to indicate this message to be call setup message based on the fixing user terminal type;
Be sent completely field: when by call setup message carrying called number, be used to indicate corresponding called number to be sent completely.
The field that increases in the informational message of described expansion comprises:
Informational message type field: be used to indicate this message to be informational message based on fixing user terminal;
Be sent completely field: be used to indicate called number to be sent completely;
Keypad facility field or called number field: be used to carry called number information.
Described method also comprises:
When fixing user terminal inserts fixed access system, fixed access system is restarted or connect with mobile switching centre again, then fixed access system is initiated position updating process to mobile switching centre, and fixed access system is preserved the information of fixing user terminal.
Described method also comprises:
When mobile switching centre receive that attaching position register sends get roaming number message after, and when definite called subscriber is fixing user terminal, then directly be its distribution roaming number, and in the attribute of this roaming number, be recorded as fixing user terminal, return to described attaching position register.
Described method also comprises:
After the initial address message of interoffice is received by mobile switching centre, determine that according to roaming number the called subscriber is a fixing user terminal, the call setup message that then directly issues expansion is given fixed access system, is indicated as being the fixing user terminal type of call in the message.
As seen from the above technical solution provided by the invention; realization of the present invention makes that can reuse wireless core network realizes fixed access service; and do not need to rearrange fixed telephone network; protected the investment of mobile operator; simultaneously, business such as wireless network roaming are provided for landline telephone.
Description of drawings
Fig. 1 is the existing mobile communication network structural representation;
Fig. 2 is the structural representation of system of the present invention;
Fig. 3 upgrades process chart for the position of fixing user terminal among the present invention;
The process chart that Fig. 4 makes a call for fixing user terminal among the present invention;
Fig. 5 is for obtaining the process chart of fixing user terminal routing iinformation among the present invention;
Fig. 6 is the process chart of fixing user terminal among the present invention when called.
Embodiment
System of the present invention forms fixed access system by fixed base stations and fixed base stations access module as shown in Figure 2, and described fixed access system is communicated by letter with cordless communication network by the wireless communication interface of expansion and the wireless communication interface of standard.
Fixed base stations provides the fixed telephone subscriber place in circuit, the descending landline telephone that connects of this module, and fixed base stations is carried out after certain convergence mutual by trunk line and fixed base stations controller to the fixed telephone subscriber.
The fixed base stations access module connects a plurality of fixed base stations, and the Iu interface (being the Iu+ interface) of up A interface (being A+ interface) that expansion is provided or expansion inserts radio core network, descendingly then communicates by letter with radio core network by the A interface or the Iu interface of standard.The fixed base stations access module can be a separate equipment, also can be integrated among BSC (base station controller) or the RNC (radio network controller).
Undertaken by intercommunication between fixed base stations and fixed base stations access module, form fixed access system.Fixed base stations and fixed base stations access module also can be the equipment of unification.Described fixed access system can adopt the fixed access system (AN) in the existing fixed network to realize.
Fixed access system distributes a MSISDN (mobile station ISDN number) and IMSI (international mobile subscriber identity) number for each phone, and the user data of each landline telephone is the same with mobile device with positional information all to be left among the HLR (attaching position register).Utilize wireless core network to provide professional, the data of fixed access system only need be set by telephone number, utilize the services of roaming flow process of mobile communication system, can realize the services of roaming of landline telephone easily to landline telephone.
The call flow of landline telephone is followed the mobile device call flow, but in order to support the dialing custom of landline telephone overlap sending, existing A interface and Iu interface need be expanded, and promptly need to communicate by the A interface and the Iu interface of expansion between the MSC of fixed access system and wireless network.
At first, the position when inserting fixing user terminal by fixed access system more new technological process describes, and as shown in Figure 3, specifically comprises:
Step 31: when inserting a fixing user terminal in the fixed access system, then send location update request message to the MSC of wireless core network by fixed access system;
Step 32: after described MSC receives described location update request message, then send location update request message to HLR;
Step 33: described HLR sends to MSC and inserts user data indication information, the attaching information of this fixing user terminal of acquisition request;
Step 34: described MSC sends to HLR with the attaching information of this fixing user terminal,
Step 35:HLR upgrades acknowledge message to the MSC home position;
Step 36:MSC upgrades response message to the fixed access system home position.
So far, the position is upgraded processing procedure and is finished, more new technological process is similar substantially with original location of mobile users, difference only is that fixed access system just can be initiated more new technological process of position to MSC when inserting fixing user terminal, and MSC/VLR (VLR Visitor Location Register) information that this user attaching is write down in meeting among the successful back HLR is upgraded in the position; And, for the fixing user terminal user, do not require the periodic location update flow process, there is not the implicit detach flow process yet.Described access fixing user terminal is to open an account by operation system in the business hall.The fixing user terminal information that needs recording configuration in fixed access system when fixed access system is restarted or recovered to be connected with MSC, need be utilized the described information corresponding position of initiation new technological process more automatically.
To among the present invention, the fixing user terminal in the fixed access system describes by the processing procedure that the A/Iu interface of expanding makes a call below.
As shown in Figure 4, corresponding processing procedure specifically comprises:
Step 41: behind the fixing user terminal off-hook, fixed access system detects the off hook signal of fixing user terminal;
Step 42: the service request CMSERVICE REQUEST message of fixed access system after moving exchanging center MSC sends expansion, to fixedly access service of MSC (mobile switching centre) request;
I.e. type of service parameter in Kuo Zhan the CM SERVICE REQUEST message, newly-increased Fixedtelephone service (fixed-line phone service type) territory, be used to represent that this message comes from fixed access system, be business request information based on fixing user terminal;
Step 43: the moving exchanging center MSC support fixedly during access service, is then replied acknowledgement message, i.e. Kuo Zhan service request acknowledge message;
Step 44: after fixed access system is received described service request acknowledge message, then send idle tone to fixing user terminal, the user of prompting fixing user terminal can begin dialing;
Step 45: fixing user terminal sends to fixed access system with dialing information;
Step 46: fixed access system sends SETUP (call setup) message of expansion to MSC according to the dialing information that receives;
Be that fixed access system can be after receiving the connection management service request acknowledgement message of MSC, the SETUP message after the transmission expansion is to MSC, and request is set up landline telephone and called out;
The information that expansion increases in the described SETUP message comprises: SETUP type of message parameter (Setup message type, Setup type of message) is used to indicate the call request (SETUP FIXED TELEPHONE) of landline telephone;
Fixed access system also can wait receives the call setup SETUP message that sends after the short codes length after the expansion; Short codes length configurable modification in fixed access system;
Called number may be with in the SETUP message that fixed access system sends, also whole called numbers may be with entirely; Received number if fixed access system is known, need be in SETUP message with on Sending complete (the sending fully) information unit of expansion, received number with expression;
Step 47: fixing user terminal continues dialing, and dialing information is delivered to fixed access system;
Step 48: fixed access system collects the digits in the operating process, sends to MSC to be used to carry dialing information
INFORMATION (information) message of the expansion of (being called number);
The INFORMATION message of described expansion is used for overlap sending; When the call setup SETUP message that fixed access system sends is not with called number or number not full-time, fixed access system is by the follow-up called number of one or more INFORMATION message informing MSC, carrying information message type (informational message type) information unit in the described message, be used to indicate this information to be informational message based on fixing user terminal, be fixed-line phone service type information message, receive number if fixed access system is known, need in the INFORMATION message that sends, be with Sending complete information unit;
In INFORMATION message, corresponding called number can also can be placed in Keypad facility (keypad facility) information unit in Called party BCDnumber (called number) information unit;
Step 49: described fixing user terminal continues dialing, and last group dialing information is sent to fixed access system;
Step 410: the fixing user terminal FD finished dialing after promptly fixed access system is finished the operation that collects the digits, sends the INFORMATION message that the expression process of transmitting finishes to MSC;
As previously mentioned, loaded information comprises in the INFORMATION message of this expression process of transmitting end: sending complete (sending fully) information unit.
Step 411:MSC initiates follow-up call handling process to fixed access system, and is continued to initiate to continue the subsequent voice calls processing procedure to fixing user terminal by fixed access system, afterwards, just can carry out normal call treatment between the calling and called;
MSC receives that the processing behind enough numbers is identical with original processing procedure, is specially:
MSC receives when having the SETUP message that sends (Sending complete) information unit fully or INFORMATON message, thinks and receive enough numbers; MSC receives that whenever a collection of number just carries out called number analysis simultaneously, after the number of receiving can analyze the destination, thinks and receives enough numbers; After if MSC analyzes the destination, number does not receive, and such as outbound call, just knows striking out after receiving certain number, and then MSC needs continue to pass to next office by office point signaling (ISUP, TUP etc.) when receiving follow-up number.
Afterwards, the processing procedure that the MSC/GMSC as called time of fixing user terminal equipment among the present invention is obtained routing iinformation describes again, as shown in Figure 5, specifically comprises:
Step 51: gateway MSC GMSC sends SRI (sending routing information) message to HLR after receiving IAM (initial address) message;
Step 52:HLR sends PRN (getting roaming number) message to the MSC at fixing user terminal place;
Step 53: the MSC at fixing user terminal place at first judges called user type after receiving the PRN of HLR (getting roaming number) message, if fixing user terminal type of user, then directly distribute roaming number, and in the attribute of this roaming number, be recorded as fixing user terminal, and execution in step 54, and need not restart the paging flow process; If the mobile subscriber then carries out according to original roaming number flow process of getting.
Step 54: the roaming number of described distribution is sent to HLR by PRN_ACK (getting the roaming number response) message;
Step 55: continue described roaming number is returned to GMSC (Gateway MSC) by SRI_ACK (response sends routing information) message by HLR.
At last, again among the present invention, fixing user terminal equipment uses the corresponding call handling process of expansion A/Iu interface when called to describe, and as shown in Figure 6, specifically comprises:
Step 61:MSC receives interoffice information initial address (IAM) message;
It is the fixing user terminal type that step 62:MSC judges called according to roaming number, continues then to judge whether this fixing user terminal is idle, if idle execution in step 63;
Step 63: directly issue expansion SETUP message and give the terminal connecting system, indicating type of call is the type of call of landline telephone;
Follow-up call handling process is similar to the ordinary call handling process in the mobile communication system, so no longer describe in detail.
The information that will specifically comprise the message after each expansion is described in conjunction with chart below, the present invention has just carried out expansion to existing message format to be increased, the information that information unit shown in the black face in each table increases newly for the present invention, illustrate in the concrete implication description in front, and the content information that comprised originally for each message is not explained so the present invention does because it is known.
1, for the CM SERVICE REQUEST message of expansion, the information content that comprises after its expansion is as shown in table 1:
Table 1
| Information unit (Information element) | Type/reference (Type/Reference) | Form | Length | |
| Mobility management protocol discriminator (1110)/mobility management protocol is distinguished language | Protocol discriminator/ agreement is distinguished language | Essential | Numerical value | 1/ 2 |
| Skip Indicator/ skips indication | Skip Indicator/ skips indication | Essential | Numerical value | 1/ 2 |
| CM Service Request message type/ connection management service request information type | Message type/ type of message | Essential | |
1 |
| CM service type/ connection management type of service | CM service type/ connection management type of service | Essential | Numerical value | 1/ 2 |
| Spare/ keeps | Spare (1111)/reservation (1111) | Essential | Numerical value | 1/ 2 |
| Mobile identity/ mobile logo sign indicating number | Mobile identity/ mobile logo sign indicating number | Essential | Length+numerical value | 2-9 |
Type of service described in the table 1 specifically comprises the following information content, and is as shown in table 2:
Table 2
2, the information content that comprises of expansion SETUP message is specially shown in table 3 and table 4:
Table 3 is: the form that is sent to mobile network's SETUP message by fixed access system;
Table 4 is: the form that is sent to the SETUP message of fixed access system by the mobile network;
Table 5 is: the type of message coding after the expansion.
Table 3
| Information unit sign (IEI) | Information unit (Information element) | Type/reference (Type/Reference) | Form | Length | |
| Call control protocol discriminator/ call control protocol is distinguished language | Protocol discriminator/ agreement is distinguished language | Essential | Numerical value | 1/2 | |
| Transaction identifier/ Session ID | Transaction identifier/ Session ID | Essential | Numerical value | 1/2 | |
| Setup message type/ sets up type of message | Message type/ type of message | Essential | Numerical value | 1 | |
| FD | Sending complete/ sends fully | Sending complete/ sends fully | Optional | Type | 1 |
| 04 | Bearer capability/ bearing capacity | Bearer capability/ bearing capacity | Essential | Type+length+numerical value | 3-16 |
| 1C | Facility (simple recall alignment)/facility (simple recall alignment) | The Facility/ facility | Optional | Type+length+numerical value | 2- |
| 5D | Calling party sub-address/ caller subaddressing | Calling party subaddr./caller subaddressing | Optional | Type+length+numerical value | 2-23 |
| 5E | Called party BCD number/ called number | Called party BCD num./called number | Essential | Type+length+numerical value | 3-43 |
| 6D | Called party sub-address/ called party subaddress | Called party subaddr./called party subaddress | Optional | Type+length+numerical value | 2-23 |
| 7C | Low layer compatibility/ bottom compatibility | Low layer comp./bottom compatibility | Optional | Type+length+numerical value | 2-18 |
| 7D | High layer compatibility/ High Layer Compatibility | High layer comp./High Layer Compatibility | Optional | Type+length+numerical value | 2-5 |
| A1 | The restriction of CLIR suppression/ calling line suppresses | The restriction of CLIR suppression/ calling line suppresses | Optional | Type | 1 |
| A2 | The restriction of CLIR invocation/ calling line is called | The restriction of CLIR invocation/ calling line is called | Optional | Type | 1 |
Table 4
| Information unit sign (IEI) | Information unit (Information element) | Type/reference (Type/Reference) | Form | Length | |
| Call control protocol discriminator/ call control protocol is distinguished language | Protocol discriminator/ agreement is distinguished language | Essential | Numerical value | 1/2 | |
| The Transactionidentifier/ Session ID | Transaction identifier/ Session ID | Essential | Numerical value | 1/2 | |
| Setup message type/ sets up type of message | Message type/ type of message | Essential | Numerical value | 1 | |
| FD | Sending complete/ sends fully | Sending complete/ sends fully | Optional | Type | 1 |
| 04 | Bearer capability/ bearing capacity | Bearer capability/ bearing capacity | Essential | Type+length+numerical value | 3-16 |
| 1C | The Facility/ facility | The Facility/ facility | Optional | Type+length+numerical value | 2- |
| 1E | Progress indicator/ makes progress deictic word | Progress indicator/ makes progress deictic word | Optional | Type+length+numerical value | 4 |
| 34 | The Signal/ signal | The Signal/ signal | Optional | Type+length+numerical value | 2 |
| 5C | Calling party BCD Number/ calling number | Calling party BCD num./calling number | Optional | Type+length+numerical value | 3-14 |
| 5D | Calling party sub-Address/ caller subaddressing | Calling party subaddr./caller subaddressing | Optional | Type+length+numerical value | 2-23 |
| 5E | Called party BCD Number/ called number | Called party BCD num./called number | Optional | Type+length+numerical value | 3-19 |
| 6D | Called party sub-Address/ called party subaddress | Called party subaddr./called party subaddress | Optional | Type+length+numerical value | 2-23 |
| 74 | Redire cting party BCD number/ transferred number | Redirecting party BCD num./transferred number | Optional | Type+length+numerical value | 3-19 |
| 75 | Rotor address before the Redirecting party sub-address/ | Redirecting party subaddress./preceding rotor address | Optional | Type+length+numerical value | 2-23 |
| 7C | Low layer compatibility/ bottom compatibility | Low layer comp./bottom compatibility | Optional | Type+length+numerical value | 2-18 |
| 7D | High layer compatibility/ High Layer Compatibility | High layer comp./High Layer Compatibility | Optional | Type+length+numerical value | 2-5 |
| 8- | Priority/ priority | Priority Level/ priority | Optional | Type+numerical value | 1 |
| 19 | Alert/ shakes bell | Alerting Pattern/ shake bell attribute | Optional | Type+length+numerical value | 3 |
| 2F | Network Call Control Capabilities/ calling network control ability | Network Call Control cap./calling network control ability | Optional | Type+length+numerical value | 3 |
| 3A | Cause of No CLI/ does not have the reason of calling line | Cause of No CLI/ does not have the reason of calling line | Optional | Type+length+numerical value | 3 |
Table 5
3, newly-increased INFORMATION message is as shown in table 6:
Table 6
| Information unit sign (IEI) | Information element | Type/Reference | Presence | Format | Length | |
| Call control protocol discriminator/ call control protocol is distinguished language | Protocol discriminator/ agreement is distinguished language | Essential | |
1/2 | ||
| Transaction identifier/ Session ID | Transaction identifier/ Session ID | Essential | |
1/2 | ||
| Indormation message type/ informational message type | Message type/ type of message | Essential | |
1 | ||
| FD | Sending complete/ sends fully | Sending complete/ sends fully | | Type | 1 | |
| 2C | Keypad facility/ keypad facility | Keypad facility/ keypad facility | Optional | Type+numerical value | 2 | |
| 5E | Called party BCD number/ called number | Called party BCD num./called number | Optional | Type+length+numerical value | 3-19 |
In sum, realization of the present invention makes in wireless network when providing service for fixed-line subscriber; no longer need to rearrange fixed telephone network; thereby effectively protected the investment of mobile operator, simultaneously, provide business such as wireless network roaming easily for landline telephone.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (11)
1, a kind of fixed access system comprises the fixed base stations that connects user terminal, and connected fixed base stations access module, it is characterized in that,
Described system also comprises:
Wireless communication interface, described fixed base stations access module is by described wireless communication interface and wireless network intercommunication;
Described system is behind the off hook signal that detects fixing user terminal; Send the connection management CM service request information of expansion to moving exchanging center MSC by described wireless communication interface; Described system plays the corresponding prompt sound according to the message that MSC returns to fixing user terminal; Described system, asks to set up landline telephone and calls out to the call setup message that MSC sends expansion by described wireless communication interface after detecting user's dialing signal.
2, fixed access system according to claim 1 is characterized in that, described wireless communication interface comprises:
The wireless communication interface of the wireless communication interface of descending standard and up expansion.
3, fixed access system according to claim 1 and 2 is characterized in that, described wireless communication interface is A interface or Iu interface.
4, the method for landline telephone access service is provided in a kind of wireless network, it is characterized in that, comprise and pass through the wireless communication interface intercommunication between the mobile switching centre in fixed access system and the wireless network, described method also comprises:
A, detect the off hook signal of fixing user terminal when fixed access system after, then send the connection management CM service request information of expansion to moving exchanging center MSC;
B and the message of returning according to MSC are play the corresponding prompt sound to fixing user terminal;
After C, fixed access system detect user's dialing information, then send the call setup message of expansion to MSC, request is set up landline telephone and is called out.
5, the method for landline telephone access service is provided in the wireless network according to claim 4, it is characterized in that, this method also comprises:
The continuation dialing information of D, the detected fixing user terminal of fixed access system, and by the expansion informational message send to MSC, collect complete number until MSC.
6, according to the implementation method that the landline telephone access service is provided in claim 4 or the 5 described wireless networks, it is characterized in that, described expansion CM service request information is to increase the CM type of service field in the CM request message in wireless network, and being used to indicate this message is the CM request message of being sent by fixing user terminal.
7, the implementation method of landline telephone access service is provided in the wireless network according to claim 6, it is characterized in that, the call setup message of described expansion is that setting up in wireless network increases the call setup message type field and be sent completely field in the message, wherein:
Call setup message type field: be used to indicate this message to be call setup message based on the fixing user terminal type;
Be sent completely field: when by call setup message carrying called number, be used to indicate corresponding called number to be sent completely.
8, the implementation method of landline telephone access service is provided in the wireless network according to claim 6, it is characterized in that, the field that increases in the informational message of described expansion comprises:
Informational message type field: be used to indicate this message to be informational message based on fixing user terminal;
Be sent completely field: be used to indicate called number to be sent completely;
Keypad facility field or called number field: be used to carry called number information.
9, according to the implementation method that the landline telephone access service is provided in claim 4 or the 5 described wireless networks, it is characterized in that this method also comprises:
When fixing user terminal inserts fixed access system, fixed access system is restarted or connect with mobile switching centre again, then fixed access system is initiated position updating process to mobile switching centre, and fixed access system is preserved the information of fixing user terminal.
10, according to the implementation method that the landline telephone access service is provided in claim 4 or the 5 described wireless networks, it is characterized in that this method also comprises:
When mobile switching centre receive that attaching position register sends get roaming number message after, and when definite called subscriber is fixing user terminal, then directly be its distribution roaming number, and in the attribute of this roaming number, be recorded as fixing user terminal, return to described attaching position register.
11, according to the implementation method that the landline telephone access service is provided in claim 4 or the 5 described wireless networks, it is characterized in that this method also comprises:
After the initial address message of interoffice is received by mobile switching centre, determine that according to roaming number the called subscriber is a fixing user terminal, the call setup message that then directly issues expansion is given fixed access system, is indicated as being the fixing user terminal type of call in the message.
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| CN107708103B (en) * | 2017-11-05 | 2020-08-14 | 浙江东信昆辰科技股份有限公司 | Method for realizing number security based on MAP signaling |
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| CN1194756A (en) * | 1995-07-12 | 1998-09-30 | 艾利森电话股份有限公司 | Method and apparatus for providing fixed cellular functionality |
| EP1122963A1 (en) * | 2000-02-04 | 2001-08-08 | Alcatel | Private telephone network |
| CN1558696A (en) * | 2004-01-19 | 2004-12-29 | Method of switching in fixed telephone and integrated network terminal by using mobile core network |
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| CN1878357A (en) | 2006-12-13 |
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