my setup is like this
CUCM 7.x ->VGR(3845)H323 ->Nortel Pbx(QSIG)
E1 PRI is connected to Voice gateway router.A call handler is handling the call when a board number hits, then they will be landing on the extension dialed.
The cisco ip phones are displaying caller ID correctly if the calls are for cisco extensions.when a call comes for Nortel phones/extensions then its showing Voice mail port number instead of calling party ID.
Have changed the service parameter settings QSIG varaint to ECMA and h323 configurations like
h225 display-ie ccm-compatible
isdn supp-service name calling profile Network-Extension operation-value-tag lo
isdn outgoing ie facility
isdn outgoing ie extended-facility
isdn outgoing display-ie
isdn outgoing ie connected-number
isdn outgoing ie caller-number
isdn outgoing ie caller-subaddr
isdn outgoing ie called-number
But no luck.
Any help/suggestions are appreciated.