I am trying to find out if Cisco currently supports MCDN signaling (Nortel Propietary PRI Signaling). I have read that with Nortel-Cisco configuration you can use DMS100, QSIG, EUROISDN, QSIG signalings but I have not found anything about MCDN (IFC SL1 on Nortel D-Channel configuration). The main reason to keep this signaling is that we have to guarantee, if we migrate to VoIP, that Network ACD messages, Network Authorization Codes, Anti-Tromboning, Trunk Optimization, Network Class of Service, Network Call redirection, Names, etc are currently supported by Cisco. I will really appreciate you could share some experience, knowledge with me.
As Meridian Customer Defined Networking (MCDN) is based upon a Nortel Propriatary message protocol (not an API or Q.931) it is unlikely that any Cisco Gatekeeper will interface with the PBX utilizing this protocol. I have read the comments of the other respondants and agree with the limited inter-system functionality to a point.
Regarding features like Caller Line ID for QSIG call diversion, two-way name display, and QSIG Message Waiting - these features are supported by choosing the National ISDN 2 (NI2) signaling protocol. Unfortunately NI2 is only supported on Nortel PBX equipment of release 25.40 or higher - possibly resulting in a cost to your organization for the upgrade.
I suppose some of your other concerns like anti-tromboning can be addressed by one of to methods.
First, logically locate services - voice mail is the leading culprit in developing the multiple connections that you are seeking to avoid. While aggregating all users on a single voice processing system offers some cost and functional advantages there are these resource issues that may not be overcome.
The second possible solution would be to use H.323 gateways in both the PBX (ITG II Card) and the Call Manager. As this method creates a point to point connection between devices each "transfer" releases the previous connection.
I have connected the AVVID to a Nortel switch a couple of times in my lab - functionality is marginal. If you seek specific information let me know - If I have not tried the scenario - I will put it together.
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Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...