Specifications

X723-300151 1-13 Issue 2
Display Peak Codes
The data display can only display fixed unchanging data patterns which is
therefore not suitable for checking analogue encoded circuits. A 'Peak
codes' display allows the digital code of an analogue signal, and its
equivalent power level to be displayed for any incoming timeslot.
The circuit must be coded to CCITT G.711 A law for this to operate
correctly.
Loopbacks
Various loopback facilities are provided to aid circuit testing.
Local loops; loop the PCM line signal back to the 3200.
Incoming loops; loop the PCM line signal back to the line.
Timeslot loops; loop individual timeslots back to their source.
Circuit loops; activate loops on data channel cards. Generally these are bi-
directional loops to CCITT. X.150
1.3 Mechanical Description
The 3200 is housed in a 19 inch 6RU chassis assembly. The chassis is
fitted with a front panel which is designed to give protection against
electrostatic discharge and should be fitted at all times when the
equipment is in service. The 3200 requires an external power shelf, the
3000 redundant power supply shelf, which is housed in a 19 inch 3RU
chassis.
No electrical connections are required to the front of the unit during 'in
service' operation. Access is provided to the local V.24 port via a covered
cut out in the front panel. Two windows in the front panel allow viewing
of the equipment status LED indicators of the System Controller(s).