PBX Master Cable

Article Number: I007
Article Type: Info
Modified: November 23, 1998

SUMMARY

This article describes the cable requirements to interface an Athena Access FXS Voice Module and a UK Telephone by way of a PBX Master cable.

The FXS module available for the Athena Access does not provide direct interface support for UK-based, BT-approved telephones. These telephones require the use of a PBX Master cable in order to present the ring voltages on the proper pins of the telephone interface.

This same cable also serves to provide the proper connectorization between the telephone and Access.

Without this cable, you would experience the following symptoms:

Telephone handset does not ring when an incoming call is presented.
Lifting the handset will answer this unannounced call.
If the handset is lifted when there is no call, a normal dial tone may be heard.

MORE INFORMATION

Cable Requirements

The cable presented herein is intended as a brief overview of its design, but is not intended to provide all of the details necessary to construct one. This cable is generally available from a variety of sources in the UK, and a brief list of sources is presented in the REFERENCES section.

Athena Access RJ45-FXS		Telephone BT431A
4	-----	5
5	-----	2
		\| 1.8uf 250V capacitor \|
		3

REFERENCES

This cable is available from any one of the following sources. Other sources may be available as well.

Supplier	Part Number	U.K. Phone Number
Betterbox	ADP0646	01908 560200
Black Box	FA9001	01189 655100
Maplin	VL21X	01702 554000

Please note that this list is provided as a courtesy. §

Keywords: Athena Access, PBX, FXS, telephone, UK, BT
Product: Athena
Model: Access