What should the Max-Channels Number be in an H323-stack Configuration

Asset ID:	1-71-1598822.1
Update Date:	2017-04-03
Keywords:

Solution Type Technical Instruction Sure

Solution 1598822.1 : What should the Max-Channels Number be in an H323-stack Configuration

Applies to:

Acme Packet 3820 - Version S-Cx6.2.0 and later
Acme Packet 4500 - Version S-Cx6.2.x and later
Acme Packet 4600 - Version S-Cz7.1.2 and later
Acme Packet 6100 - Version S-Cz7.1.2 and later
Acme Packet 6300 - Version S-Cz7.1.2 and later
Acme Packet OS

Goal

What number should max-channels in h323-stack configuration be?

Solution

The max-channels is to limit the maximum number of channels which can be opened for each call. The main purpose of the parameter is its use in PVT memory calculation. In an audio only call, 2 channels will normally be opened. One is for RTP and and another is for RTCP. If a t38 fax is to use the different channels, another pair of channels is needed for t38. So, when planning for audio only, it's recommended to configure max-channels to 4. When video is possibly involved in calls, another 2 channels are needed for video, which makes up 6 channels in total. So, it's necessary to define max-channels as 6.

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