Installation guide

Appendix D UK PSS and KiloStream
D.1 General
Ports labelled ''SAFETY WARNING See Instructions For Use'' do not
provide isolation sufficient to satisfy the requirements of the relevant parts
of BS 6301. Apparatus connected to these ports must itself either be
approved to the relevant parts of BS 6301 or have previously been
evaluated against British Telecom (Post Office) Technical Guide 2 or 26
and been granted permission for attachment. Other usage will
invalidate any approval given to this apparatus.
In order to meet the safety requirements of our PSS/KiloStream approval it
is important to make sure that the equipment is correctly installed and
maintained.
When delivered from the factory for use in the UK the physical interfaces
of ports which can be connected to PSS and KiloStream are given in Table
D-1. Note that PIM4 and PIM5 ports are prohibited from
connection.
Table D-1 Permissible UK PSS/KiloStream Connections
INTERFACE
TYPE
PIM
TYPE
LINE
SPEED
CONNECTOR
TYPE
CABLE
PART
NUMBER
V.24
X.21
V.35
V.36
1, 7
2, 6, 7
3
2, 6, 7
19200 bps
64 kbps
64 kbps
64 kbps
2 × 25-way
D-type male (DTE)
2 × 15-way
D-type male (DTE)
2 × 15-way
D-type male (DTE)
15-way to 37-way
D-type male (DTE)
X818-401211
X890-408411
X818-401311
X890-406611
Connection to PSS and KiloStream NTUs must be made with the cables
specified in Table D-1, and they must be installed by a competent engineer.
X870-300451 Issue 2 D-1 Rev.1