Nortel Networks Remote Gateway 50 manual Calling Line ID composition

Page 172 of 258 Dialing Plan configuration

For a given branch office, there may be more than one zone defined at the main office. Therefore, different SRG users may receive different routing treatments.

The combination of zone-based digit manipulation and CS 1000 routing capabilities can be used to achieve many other routing outcomes for SRG user calls.

Calling Line ID composition

Digital manipulation is commonly used for digit insertion and deletion. It is also used for call type conversion before out-pulsing the digits to the Virtual Trunk.

The IP Special Number (ISPN) parameter in the ESN data block ensures the Calling Line ID (CLID) is formed correctly when a call-type is converted from its original type (such as International, National, or SPN) to CDP/UDP/ SPN format. Conversion to CDP/UDP/SPN format ensures that the call-type stays in the Private/Special Number domain.

The ISPN parameter is configured in LD 86. By default, it is set to NO.

If ISPN is NO, the CLID is formed based on the CTYP parameter of the DMI data block, and INST digits are inserted.

If ISPN is YES, the CLID is formed based on the call-type before digit manipulation. INST digits are inserted, and the CLID is considered an IP

553-3001-207 Standard 2.00 January 2006