Table of Contents
Advertisement
Page 20 - Primary Rate Interfaces
Primary Rate Interfaces
PRI Cassette Set up
Page 20 - Inserting Device Cassettes
38DHB0002UKDJ – Issue 3 (12/00)
Primary Rate Interfaces (PRI) provide multiple digital trunks through a single
physical link ). Each PRI connection provides up to 30 B-channels (bearer
channels) for calls plus a D-channel (data channel) for call control.
The INDeX supports PRI using the following device cassettes:
– DASS Cassettes : (Digital Access Signalling System)
A digital service for external calls. You can use DASS trunks as either normal
trunks or DDI trunks.
– DPNSS Cassettes : (Digital Private Networking Signalling System)
A digital service for private network calls using leased digital lines.
– EURO PRI Cassettes :
These cassettes can be switched to either ISDN or QSIG operation. In ISDN
mode each EURO PRI cassette acts either as a T-interface (i.e. provides
INDeX to PSTN trunk connections) or an S-interface (i.e. provides INDeX to
PRI device connections).
The settings for PRI interfaces cassettes must match those required by the PSTN
service provider.
To set up a PRI cassette :
1. From the Administration menu, select Linecard Information.
2. Select Linecard and enter the cassette's address.
3. Select Description and enter a name for the cassette.
4. Select Set up.
5. For all PRI cassette types, select Frame Format and set this to CRC (cyclic
redundancy check) or DF (double frame) as required by the network provider.
6. For DPNSS cassettes, select Signalling Channel and set this to A or B as
required by the network provider.
7. For EURO PRI cassettes, select Signalling type to select either ISDN or QSIG.
– In ISDN mode, select Interface type and set this to T for connection to the
PSTN or to S for connection to a private network.
Changing these settings also requires corresponding changes to the
– In QSIG mode, select Signalling Channel and set this to A or B as
required by the network provider.
Inserting Device Cassettes
WARNING :
physical wiring.
Programming Manual
INDeX 9.1
Advertisement
Table of Contents
