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BS 6450-4:1993

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

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withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators Specification for ports
Available format(s)

Hardcopy , PDF

Withdrawn date

05-01-2009

Language(s)

English

Published date

12-15-1993

Committees responsible
Foreword
Introduction
Specification
1 Scope
2 References
3 Definitions, abbreviations, notation and concept
4 Classification
5 Compliance principles
6 General testing principles
7 Requirements applying to particular port types
8 General requirements
9 Signalling
10 Transmission
11 Text deleted
12 Crosstalk
13 Port connection arrangements
14 Information required for test purposes and for the
    instructions for use
Annexes
A (normative) Analogue test methods
B (normative) Digital test methods
C (informative) General electrical recommendations
D (informative) Recommendations for overload performance
E (informative) Recommendations for standby power if required
F (informative) Recommendations for the partitioning of
    PBX control functions
G (informative) Recommendations for integrity of design
Tables
1 Summary of ports
2 Relationship between private networking port types
3 Ports for direct connection to a PSTN
4 Ports for direct connection of approved apparatus
5 Private networking ports
6 Ports for connection to private network links
7 Integral terminating station
8 Requirements applying to port type PA1
9 Requirements applying to port type PA2
10 Requirements applying to port type PD1
11 Requirements applying to port type PD2
11a Requirements applying to port type PD3
12 Requirements and recommendations applying to port type 1AS
13 Requirements and recommendations applying to port type 1BS
13a Requirements and recommendations applying to port type 1CS
13b Requirements and recommendations applying to port type 1DS
13c Requirements and recommendations applying to port type 1ES
14 Requirements applying to port type 1AN
15 Requirements and recommendations applying to port type 4A
16 Requirements and recommendations applying to port type 4B
17 Requirements applying to port type 4C
18 Requirements applying to port type 4E
19 Requirements applying to port type 4F
20 Requirements applying to port type NWH
21 Requirements and recommendations applying to port type NW2
22 Requirements and recommendations applying to port type NW4
23 Requirements and recommendations applying to port type NWD
23a Requirements and recommendations applying to port type NWD2
24 Requirements and recommendations applying to port type NWS
25 Requirements applying to port type L2
26 Requirements applying to port type L4
27 Requirements and recommendations applying to port type LD
28 Requirements applying to integral terminating stations -
    analogue, ITS-A
29 Requirements applying to integral terminating stations -
    digital, ITS-D
30 Requirements applying to integral terminating stations
    - cordless analogue, ITS-CA
30a Requirements and recommendations applying to port type ITS-CD
31 Tabulation of call path performance
32 Jitter limits
33 Minimum return loss for 2048 kbit/s service
34 Maximum allowed PBX call path loss for a PBX-derived port
    feeding current
34a PBX call path losses
35 Maximum allowed PBX call path loss for a through-fed PBX
36 Variation of loss with frequency
37 Sending sensitivity mask
38 Receiving sensitivity mask
39 Passband frequency response mask
40 Example showing change of frequency measurements and
    requirements for a usage P and a usage l port
41 Relative sending gain variation mask
42 Relative receiving gain variation mask
43 Total distortion limits
44 Planning values for quantization distortion
45 Limits of sending total distortion
46 Limits of receiving total distortion
47 Recommended delay limits
48 Information required for test purposes and for the
    instructions for use
B.1 Measurement frequencies
Figures
1 Basic circuit diagram of a transmission decoupling unit
2 Transmission decoupling unit (no d.c. feed)
3 Simple PTRP example
4 PTRP example with extra port
5 Multiple PTRP example
6 PTRP equivalence
7 PTRP access
8 Direction of call establishment
9 Dummy ringer REN test circuit
10 Loop back signalling test
11 Asymmetric signalling test
12 Mask of pulse at a 2048 kbit/s port
13 Complex impedance termination
14 Receive-to-transmit loss measurement
15 PBX ITS to port type PD1 or PD2
16 Input relative levels
17 Impedance and signal balance test circuit
18 Test arrangement for determining voltage/current
    characteristics of port
19 Current and voltage limits
20 Figure deleted
21 Conceptual configuration of an I.430 basic access PBX
22 Reference CPP
23 Location of interfaces
A.1 Pulse source
A.2 Outpulsing logic diagram
A.3 PSTN detector circuit
A.4 Circuit for MF tone address signalling
A.5 Signalling test circuit
A.6 PSTN ringing supply
A.7 Equivalent ringer test
A.8 Cessation of calling signal when the port is entering the
    on-line stage
A.9 2-wire port transmission test configuration
A.10 4-wire port transmission test configuration
A.11 SLR and RLR tests
A.12 Port-to-port transmission test configuration
A.13 Figure deleted
A.14 Cross connections for port type 1AS
B.1 Diagram for B.1, B.2 and B.3
B.2 Diagram for B.4, B.7.2, B.8.1 and B.9
B.3 Diagram for B.5.1
B.4 Jitter values for B.5.1 and B.5.2
B.5 Diagram for B.5.2
B.6 Diagram for B.5.3
B.7 Diagram for B.6.1
B.8 Diagram for B.6.2.1
B.9 Diagram for B.6.2.2
B.10 Diagram for B.7.1
B.11 Diagram for B.11 and B.17.3
B.12 Diagram for B.12.3.1,B.13.1, B.13.2, B.15, B.16, B.17.1,
     B.17.2, B.18 and B.20
B.13 Diagram for B.14
B.14 Diagram for B.19
B.15 Diagram for B.21
B.16 Configuration for delay tests
G.1 Example of integrity of design test
List of references

Specifies requirements for private branch exchanges (PBXs) having ports that may be connected to one or more of the following: private leased circuits run by a public telecommunications operator (PTO); two or more public exchange lines; private links. Does not cover all of the features or facilities with which a PBX could be equipped. Coverage includes signalling, transmission, crosstalk, compliance principles, port connection arrangements, and protection against over voltages induced in external cabling. Also gives definitions, tables, diagrams and annexes.

Committee
W/-
DevelopmentNote
Supersedes 90/94686 DC and 94/630860 DC. Inactive for the new design. (04/2005)
DocumentType
Standard
Pages
162
PublisherName
British Standards Institution
Status
Withdrawn
SupersededBy
Supersedes

PD 6569-2:1992 Draft standard to match to and work with ETS 300 001/NET4 \'Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators\' Specification for apparatus with loudspeaking facilities
PD 6569-7:1992 Draft standard to match to and work with ETS 300 001/NET4 \'Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators\' Specification for apparatus with call barring facilities
PD 7006:1995 Essential requirements for terminal equipment intended for connection to digital interfaces of the PSTN using channel associated signalling
PD 6571:1992 BS 6789-2:1992. Apparatus with one or more particularfunctions for connection to public switched telephone networks run bycertain public telecommunication operators. Specification forapparatus with loudspeaking facilities
BS 6789-6.1:1986 Apparatus with one or more particular functions for connection to certain public switched telephone networks. Specification for series connected apparatus Apparatus having maximum allowable impairments

ETS 300 192 : 20001 PRIVATE TELECOMMUNICATIONS NETWORK (PTN); SIGNALLING PROTOCOL AT THE S-REFERENCE POINT - CIRCUIT MODE BASIC SERVICES
BS 6833-5:1991 Apparatus using cordless attachments (excluding cellular radio apparatus) for connection to analogue interfaces of public switched telephone networks Specification for the cordless elements within PBX apparatus with analogue interfaces to the PSTN and terminating stations treated as an entirety
BS 6450-3.1:1993 Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators. Direct dialling in on private branch exchanges Specification for direct dialling in on private branch exchanges with terminating stations treated as an entirety
BS 6833-3:1992 Apparatus using cordless attachments (excluding cellular radio apparatus) for connection to analogue interfaces of public switched telephone networks Specification for the simple call routeing mode of cordless PBX operation with analogue interfaces to the PSTN and terminating stations treated as an entirety
ETS 300 102-1 : 20001 INTEGRATED SERVICES DIGITAL NETWORK (ISDN); USER NETWORK INTERFACE LAYER 3 - SPECIFICATIONS FOR BASIC CALL CONTROL
BS 6328-8.1(1990) : 1990 APPARATUS FOR CONNECTION TO PRIVATE CIRCUITS RUN BY CERTAIN PUBLIC TELECOMMUNICATION OPERATORS - SPECIFICATION FOR APPARATUS CONNECTION TO DIGITAL CIRCUITS WITH INTERFACES ACCORDING TO ITU-T G-SERIES RECOMMENDATIONS - G.703 SERVICES AT 2048 KBIT/S AND 8448 KBIT/S
BS 2045:1965 Preferred numbers
BS 6450-6.1:1993 Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators. Simple call-routeing mode (SCRM) Specification for the simple call-routeing mode of PBX operation, with terminating stations treated as an entirety
BS 7378-1:1991 Apparatus for connection to public telecommunications systems using the Digital Access Signalling System No. 2 (DASS 2) via a 2048 kbit/s CCITT Recommendation G.703 interface General requirements
BS 6328-1:1985 Apparatus for connection to private circuits run by certain public telecommunication operators Specification for apparatus for connection to speechband circuits
BS 6450-5.1:1993 Private branch exchanges for connection to the British Telecommunications public switched telephone network. Facilities on private branch exchanges Specification for facilities on private branch exchanges with terminating stations treated as an entirety
BS 6328-8.2(1990) : 1990 APPARATUS FOR CONNECTION TO PRIVATE CIRCUITS RUN BY CERTAIN PUBLIC TELECOMMUNICATION OPERATORS - SPECIFICATION FOR APPARATUS FOR CONNECTION TO DIGITAL CIRCUITS WITH INTERFACES ACCORDING TO ITU-T G-SERIES RECOMMENDATIONS - G.703 64 KBIT/S SERVICE USING CODIRECTIONAL OPTION
BS 4669:1971 Specification for an artificial ear of the wide band type for the calibration of earphones used in audiometry

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