What is the perferred or best method to connect a Nortel PBX to an Existing Cisco IPT cluster. I know we can use PRI's to the VGW's, but is there a way connect to the GK or use ICT via Nortel IP function?
My two cents is that using a PRI QSIG may be better as it is more commonly used and has been well documented. Using other methods may cause you to have issues such as lost caller IDs, display names, etc.
However the selection depends on the availability of these functionality on the Nortel box.
If these features are available as licenses you need to check if the Nortel box is already having these licenses or you need to invest on the licensing. Currently we were working on one of the integrations with Nortel where we found that customer was required to make investment for QSIG functionality and we finally selected Euro ISDN to do the integration, with very limited feature support.
QSIG, as mentioned in earlier posts is tried and tested integration mechanism. providing support for more features as compared to SIP. But required E1/T1 interfaces on both Cisco and Nortel side.
Please refer to the following integration guides from Cisco on SIP and QSIG integration and check the feature limitation with both the integration mechanism -
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.