Table of Contents
Advertisement
Page 24 - Initial Programming
Configuring Basic Rate Interfaces
Frame synchronisation
Page 24 - Basic System Programming
INDeX 30
The INDeX 30 system defaults the first circuit to a T-interface (network) and any
remaining circuits to S-interfaces (user). Each B-channel (two per circuit) is allocated
an appropriate device address at the same time. The system automatically adds T-
Interface circuits to group 90 when allocating trunk numbers. You must manually
remove the numbers from group 90 if necessary.
If a circuit is changed from S to T or T to S, the system automatically de-allocates
the existing pair of trunk or terminal directory numbers and allocates two new
terminal or trunk directory numbers.
To configure Basic Rate circuits :
1. From the Administration menu, select Channel Information.
2. Select Setup.
3. Select the circuit you want to alter. Enter the circuit type or circuit type and circuit
type suffix separated by a /.
– Circuit Types :
T = T-Interface with connect detect (i.e.. power from the line). Use this setting for
INDeX 30 to ISDN2 exchange line connections in the UK.
X = T-Interface with no connect detect (i.e.. no power from the line).
S = S-Interface. Use this setting for INDeX 30 to ISDN terminal device
connections.
– Circuit Type Suffix :
P = Point to point connections (p-p). Use this setting for S-interface connections.
M = Point to multipoint connection (p-m). Use this setting for T-interfaces in the
UK even though they must only be physically connected as point-to-point
connections.
Frame synchronisation is used to allow the system's digital data stream to be
synchronised to the incoming BRI T interface clocks. The default is to enable Frame
synchronisation from Basic Rate T interfaces, and is correct when connecting to a
PTT.
To configured frame synchronisation:
1. From the Administration menu, select System
2. Select Frame Synchronisation
3. Select Y or N
With ISDN = yes, frame synchronisation from BRI T interfaces is enabled. This is
the setting that should be used when connecting to a PTT or other BRI network
connections that have been agreed to be enabled as synchronisation masters.
With ISDN = no, frame synchronisation from BRI T interfaces is disabled. This
should be used when connecting to BRI network connections that cannot be used as
synchronisation masters (e.g. some piggy back installations).
Basic System Programming
Installation & Maintenance
38DHB0002UKDF- Issue 4 (07/2001)
Advertisement
Table of Contents
