
134 Chapter 7 Optional VoIP trunk configurations
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• M1-IPT does not support a RadVision gatekeeper. Keep this in mind if you have an M1 in
your private network.
Using Radvision ECS 3.2 GK as the gatekeeper
When you use Radvision ECS 3.2 GK as the gatekeeper with the Business Communications
Manager, use the configurations described in this section. For detailed information about
Radvision, and how to open and use the application, refer to the documentation for the application.
Configuring Radvision for Business Communications Manager
1 Open the Radvision application.
2 On the viaIP Administrator screen, select the Settings tab, then click on the Basics button.
3 Beside the Who can register field, choose Everyone.
4 In the left frame, click the Calls button.
Ensure the following fields are set:
5 In the left frame click the Advanced button.
Ensure the following fields are set:
Table 31 Radvision Calls screen required settings
Field Value Description
Accept calls check box Box must be checked.
Routing Mode Direct
Setup(Q.931) (not
supported)
Call Control (H.245)
Set to Direct.
(Nortel recommends that you always use Direct
mode.)
Check that call is active
every
check box Leave box UNCHECKED.
Enabling this feature will result in dropped calls.
Table 32 Radvision Advanced screen required settings
Field Value Description
Check that the endpoint is
online every ___
check box Leave box checked.
This setting controls the intervals when Radvision checks
if the Business Communications Manager is still on line.
Enable TTL check box Box must be checked.
This is the only mechanism currently supported that
allows the gatekeeper to determine if the end point (the
Business Communications Manager) is active.
Force Direct for Service
Calls
check box Check this box if you selected the Routing Mode: Direct
on the Calls screen.
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