GB1045687A - Improvements in or relating to time division multiplex communication systems - Google Patents
Improvements in or relating to time division multiplex communication systemsInfo
- Publication number
- GB1045687A GB1045687A GB2823263A GB2823263A GB1045687A GB 1045687 A GB1045687 A GB 1045687A GB 2823263 A GB2823263 A GB 2823263A GB 2823263 A GB2823263 A GB 2823263A GB 1045687 A GB1045687 A GB 1045687A
- Authority
- GB
- United Kingdom
- Prior art keywords
- call
- pulse
- memory
- metering
- trunk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/10—Metering calls from calling party, i.e. A-party charged for the communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/04—Recording calls, or communications in printed, perforated or other permanent form
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Meter Arrangements (AREA)
Abstract
1,045,687. Automatic exchange systems. SIEMENS & HALSKE A.G. July 17, 1963 [July 18, 1962], No. 28232/63. Heading H4K. In a time division multiplex communication system, metering pulses in respect of a call are inserted into a circulating memory during the same time slot as that in use for the call. The addresses of the calling and called subscribers are stored in circulating memories Ua and Ub respectively whereby the appropriate line gates S1 to Sx or trunk gates SL1 to SLx may be opened synchronously during the time slot allotted to the call. The memories consist of magnetostrictive delay lines having associated amplifiers for inserting, reinserting and deleting pulses relevant to a call during the corresponding time slot. In the case of a local call, a metering pulse is inserted into circulating memory Uz (section tzm) from control unit E upon the reply of the called subscriber, and upon termination of the call the address of the calling subscriber is passed via switch SR1 to a recorder, e.g. a magnetic tape, of a subscriber's meter under the control of the circulating pulse in Uz. In the case of a trunk call, e.g. from a PBX to a main exchange, incoming metering pulses on the relevant trunks FL1 to FLx are transmitted via a transfer unit such as Ue1 and metering bus ZM to the control unit E where they are processed and injected successively into memory Uz. Provision is made in unit E for ensuring that only one pulse is inserted into Uz for each metering pulse on a trunk since in general each such pulse will be sampled more than once during the successive scanning of the line circuits T1 to Tx and transfer units Ue1 to Uex by the control unit. If only one delay line, e.g. tzm, is provided in the memory, the address of the calling subscriber must be recorded before a new pulse can be inserted so that provision is made for reading the memory between the metering pulses occurring on the trunk. Alternatively by providing a plurality of delay lines the successive pulses may all be temporarily stored and at the end of the call, the contents of the memory then passed via switches SR4, SR2 and SR3 (the identity of the called subscriber in a toll or trunk call being recorded in Ud) to a call-charge-assessing device DR, e.g. a PBX operator or an automatic ticketing device. The system may be one in which each subscriber is permanently allotted a particular time slot.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES80460A DE1159519B (en) | 1962-07-18 | 1962-07-18 | Method for recording call charges in time division multiplex switching systems, in particular in telephone switching systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1045687A true GB1045687A (en) | 1966-10-19 |
Family
ID=7508884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2823263A Expired GB1045687A (en) | 1962-07-18 | 1963-07-17 | Improvements in or relating to time division multiplex communication systems |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE635121A (en) |
CH (1) | CH411048A (en) |
DE (1) | DE1159519B (en) |
GB (1) | GB1045687A (en) |
NL (1) | NL295428A (en) |
SE (1) | SE302980B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1245438B (en) * | 1965-01-14 | 1967-07-27 | Siemens Ag | Circuit arrangement for time division multiplexing for telecommunications, in particular telephone purposes |
-
0
- BE BE635121D patent/BE635121A/xx unknown
- NL NL295428D patent/NL295428A/xx unknown
-
1962
- 1962-07-18 DE DES80460A patent/DE1159519B/en active Pending
-
1963
- 1963-07-17 SE SE794563A patent/SE302980B/xx unknown
- 1963-07-17 GB GB2823263A patent/GB1045687A/en not_active Expired
- 1963-07-18 CH CH897663A patent/CH411048A/en unknown
Also Published As
Publication number | Publication date |
---|---|
NL295428A (en) | |
CH411048A (en) | 1966-04-15 |
SE302980B (en) | 1968-08-12 |
DE1159519B (en) | 1963-12-19 |
BE635121A (en) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1276156A (en) | An arrangement for a telecommunication exchange | |
GB981336A (en) | Improvements in or relating to time-division multiplex switching systems | |
GB1185731A (en) | Improvements in or relating to Signal Transfer Systems | |
GB1045687A (en) | Improvements in or relating to time division multiplex communication systems | |
GB1046991A (en) | Electrical apparatus for the retransmission of digital impulse trains | |
US3560655A (en) | Telephone service request scan and dial pulse scan device | |
US3497631A (en) | Add-on conference trunk | |
GB1486943A (en) | Telephone exchange metering system | |
US3521001A (en) | Malicious call holding and tracing circuit | |
US3588366A (en) | Signaling circuitry for time-sharing telecommunication system | |
GB1010314A (en) | Improvements in or relating to pulse detection and allocation systems | |
US3591723A (en) | Centralized identification and debiting system for telephone subscribers | |
US3627954A (en) | Call-signaling processor in a telephone-switching system | |
US3302184A (en) | System of charging subscribers and for the remote reading of telephone charges | |
US3479466A (en) | Communication system with control signal delay means | |
US3319008A (en) | Time-slot reservation for trunk calls in pbx telephone systems | |
GB1034514A (en) | Improvements in or relating to telecommunications systems exchanges | |
US4042784A (en) | Digit storer for telecommunication system | |
GB1175946A (en) | Improvements in or relating to Telecommunications Exchange Systems | |
US3096403A (en) | Scanning control circuit | |
GB781561A (en) | Improvements in or relating to electronic telephone exchange systems | |
US3601542A (en) | Dynamic recorder system for toll ticketing | |
US3284777A (en) | Message accounting device | |
GB981339A (en) | Improvements in or relating to time division multiplex switching systems | |
US2838610A (en) | Electronic telephone system |