SM trunk channel licenses

Last Updated : Nov 24, 2014 |
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You must obtain a SM trunk channel license for each simultaneous SIP sessions to the Session Manager or call required in your IP Office branch. For example, if your system needs to support 5 simultaneous SIP sessions, you must obtain 5 SM trunk channel licenses. Calls over the SM trunk use only SM trunk channel licenses. Regardless of the call media, an SM trunk channel license is required for each call with signaling over the SM Line.
Examples of calls over the SM Line include:
  • Calls between an IP Office user and a device behind the SM Line. This includes calls to users in other sites, to centralized users within the branch in sunny-day, and centralized trunks or voice mail through Avaya Aura® Session Manager
  • Calls between an IP Office PSTN trunk and a device behind the SM Line

Calculation guidelines

The calculation of how many SM trunk channel licenses are required depends on the expected traffic patterns in the enterprise deployment. If your deployment uses Avaya WebLM, the number of SM trunk channel licenses required by the IP Office must be specified in the IP Office licensing configuration.
The ratio of the average number of users to each SM trunk channel license must be calculated based on traffic patterns and media call flows. Do not assume that the user to license ratio needs to be 1 to 1. To determine the appropriate ratio, look at patterns such as the average number of SIP calls over the SM Line, the call duration, and the destination of incoming calls.
Related links
Capacity and scalability
IP Office SIP connection to Avaya Aura Session Manager