Specifications

X723-300151 7-1 Issue 2
7 Channel Interface Cards
7.1 General Information
A copy of the manual supplied with each channel card type should be
inserted in this chapter using the dividers provided.
Channel Interface Cards may be fitted into any position as indicated in
this manual. The channel card manual describes the facilities available
on each interface along with configuration and connection detail.
All channels cards may be inserted or removed from the 3200 with power
applied to the chassis without damage. It is usual to remove the card
from the Equipment map before physical removal to prevent an alarm
being raised.
Configuration of a channel card consists of:
a) Hardware configuration by links or DIL switches.
b) Soft configuration by means of Control Ports and a TS Control port.
c) Smart cards configured by menu options.
Two 'Control ports' in the form of two bytes of information are provided for
each circuit on each channel card (on some cards only one is used), and
these are used to configure the card from the control terminal. The
setting of the bits for these control bytes is described for each card in the
relevant manual for the card type.
Voice Frequency (VF) cards require an additional byte of information
called the 'TS Control'. This byte of information is used to set the
analogue interface VF levels and is programmed at the same time as the
timeslot is assigned to the circuit. This parameter should be ignored when
assigning timeslots to data cards.
Each channel card has two 'Status ports' in the form of two bytes of
information which are available in the 'Maintenance' menu to provide the
operator with some information regarding the current operation of the
card.