ICX 500 Gateway
Doc.no.A100K12202
Page 116
Node 2 connects to the SIP Trunk 100 via Node 1
7.4. About VoIP Audio Channels
7.4.1. Call capacity
The overall maximum call capacity on SIP trunk calls are as follows:
•
Maximum outgoing conversations: 16
•
Maximum incoming conversations: 32
The actual number of simultaneous calls are limited by the SIP license installed.
SIP trunk calls are using resources from a common pool of VoIP channels, which is also used by
other VoIP services, such as AlphaNet calls and MultiModule calls. In addition to the limit set by
the SIP license, the maximum number of simultaneous SIP trunk calls will also depend on other
VoIP traffic currently active in the system.
7.4.2. Reserving VoIP channels for a SIP trunk
The SIP Trunk lines are a common pool of resources for all connected SIP Trunk nodes. The VoIP
channels used by SIP Trunk(s) are assigned dynamically. However, it is possible to reserve one
or several of the VoIP channels for a specific SIP trunk. In this way one can make sure that there
will always be VoIP channels available to this trunk.