Message Mapping For Rerouting Method - Nortel Meridian Meridian 1 Feature Description And Administration

Message mapping for rerouting method

Figure 20
Rerouting request received at the originating node.
Rerouting Request
Private
Network
Served
Business Networking Express/EuroISDN Call Diversion
• EuroISDN/DPNSS
The call establishment message is mapped with the relevant information
(Diversion information is included in the ISRM message on the DPNSS
link).
As soon as a NAM is received on the DPNSS link, it is mapped into an
ALERTING message with DLI3 Diversion information (presentation
always allowed).
The rerouting method has different names, depending on which interface it
applies. The diverting node can send a:
• Call Rerouting Request, on QSIG interfaces.
• TRO FACILITY message, on MCDN interfaces with TRO configured.
• Diverting-Immediate message, on DPNSS interfaces.
This can occur at the originating node or on a gateway node between the
originating node and the served node (refer to Figures 20, 21, and 22).
MCDN
QSIG
DPNSS
Originating
user
International ISDN PRI Feature description and administration
New Call
Meridian 1
EuroISDN
user
Page 321 of 1814
PSTN
Diverted-to
user