Nortel Meridian 1 Option 11C, Administration And Maintenance

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Chapter 2 — Feature descriptions Page 53 of 492
Option 11C ISDN BRI Administration and Maintenance
ISDN BRI COLP/COLR coding is based on ETSI protocol. COLP/COLR
from or to the public network is available to all countries, using the
EuroISDN DSS1 protocol on the BRI interface.
The construction of the ISDN BRI connected number follows the same rules
that apply to Calling Line Identification when sending an extension number
over the same interface. National and local prefixes can be added. The type
of numbering plan can be modified the same way they are modified for other
types of terminals.
Feature interactions
Digital Terminal Display
When a calling party’s digital terminal with display receives the connected
party’s information element, the display is updated with the received number
depending on the presentation status. The presentation status applies to calls
originating from non-ISDN extensions.
ISDN BRI terminals
Depending on the configuration of the Terminal Service Profiles, there is or
is not full transparency for connected number and connected sub-address
exchange between ISDN BRI terminals.
ISDN Central Office Trunks
When a call from a ISDN Central Office (CO) is answered by a ISDN BRI
terminal, the ISDN BRI terminal’s connected number is sent over the ISDN
CO trunk interface, provided that COLP/COLR service is supported. The
existing rules to generate the connected number on the ISDN CO interfaces
are not modified by COLP/COLR. With the exception of EuroISDN trunks,
the connected number is passed only if a redirection occurs.
ISDN Private Trunks
When a call from a QSIG interface is answered by a ISDN BRI terminal, the
ISDN BRI terminal’s connected number is sent over the QSIG interface. This
connected message is given, even though no prior redirection occurred.
When a call from a Meridian Customer Defined Network (MCDN) interface
is answered by a ISDN BRI terminal, the ISDN BRI terminal’s connected
number is sent over the MCDN interface. A connect message is sent no matter
how the D-channel is configured and only after a redirection has occurred.