Nortel Meridian Meridian 1 Feature Description And Administration page 1024

Page 1024 of 1814
553-2901-301 Standard 9.00 January 2002
ISDN QSIG/ETSI GF Enhancement
• During call processing, the translation of a DN address requires that the
DN be associated with a customer number. For the processing of an ETSI
basic call, this customer number association is found through the
B-Channel identified in the Channel Identification Information Element.
For the DN address translation that is not associated with a basic call, the
customer number/DN association has to be determined using other
methods. For an ISDN BRI trunk Digital Subscriber Loop (DSL)
interface, the customer number is associated with a D-Channel. For an
ISDN PRI interface, the Private Integrated Services Network Exchange
Customer (PINX_CUST) prompt in LD 17 is used to define a customer
number to a D-Channel. This implies that bearer-independent messages
on an ISDN PRI D-Channel are associated with a single customer, as
configured in LD 17.
For example, in a multi-customer configuration, if every customer on a
Meridian 1 PBX wishes to use the bearer-independent transport service
over an ETSI PRI interface, then each customer requires the use of a
separate D-Channel.
• The ISDN ETSI GF platform supports up to eight Remote Operation
Service Element (ROSE) components in one message, either in a single
Facility Information Element (FIE) or multiple FIEs. If a supplementary
service requests that the ISDN ETSI GF Transport send a message
exceeding this limit, a notification message is sent to the supplementary
service.
The following operating parameters apply to the ISDN QSIG ETSI GF
component of the feature enhancements:
• The QSIG GF gateways to and from other signaling systems, beyond the
Q reference point, such, Digital Private Networking Signaling No. 1
(DPNSS1), EuroISDN, and Meridian Customer Defined Networking
(MCDN), are only supported for Call Independent gateways.
• At a QSIG to EuroISDN, DPNSS1, or MCDN gateway, when a
call-independent Setup message is received which has a valid gateway
destination, and which includes several FIEs that belong to different
supplementary services, then the gateway is not supported by this
feature.