Cabletron Systems Cabletron SmartSwitch Router 510 Installation And Configuration Manual - A Digital Circuit (Ptt)
D-5
Installation Information – United Kingdom
Equipment Between the Approved Router and
a Digital Circuit (PTT)
If you are going to connect any other equipment, including cables or wiring,
between the approved router and the point of connection to any particular
digital circuit, then that equipment must conform to the following standards:
•
The overall transmission characteristics of all other equipment must not
have any material effect on the electrical conditions between the
equipment and the digital circuit.
•
The equipment must be approved, which may be subject to limitations on
its use, for the purpose of connection between it and a particular digital
circuit.
•
Cable or wiring must comply with a code of practice for the installation of
equipment covered by this standard or other requirements that may be
applicable.