Nortel BCM50 Configuration Manual page 384

384 Chapter 44 Configuring VoIP trunk gateways
— Gatekeeper Routed: uses a gatekeeper for call setup and control. In this method, call
signaling is directed through the gatekeeper.
— Gatekeeper Routed no RAS: Use this setting for a NetCentrex gatekeeper. With this
setting, the system routes all calls through the gatekeeper but does not use any of the
gatekeeper Registration and Admission Services (RAS).
— Refer to
configuring the gatekeeper for H.323 trunks.
Network note: If your private network contains a Meridian 1-IPT, you cannot use
Radvision for a gatekeeper.
• Call signaling port: If there are VoIP applications that require non-standard call signaling
ports, enter the port number here. 0 = the system uses the first available port.
• RAS port: If the VoIP application requires a non-standard RAS port, enter the port number
here. 0 = the system uses the first available port.
• Enable H245 tunneling: Select or deselect the check box to allow or disallow H.245
messages within H.225. Note that the VoIP Gateway service must be restarted for any
change to take effect.
• Gatekeeper Support: Fill out these fields if the network is controlled by a Gatekeeper: Also
refer to
— Primary Gatekeeper IP: This is the IP address of the primary gatekeeper.
— Backup Gatekeepers: NetCentrex gatekeeper does not support RAS, therefore, any
backup gatekeepers must be entered in this field. Gatekeepers that use RAS can
provide a list of backup gatekeepers for the end point to use in the event of the primary
gatekeeper failure.
• In the Alias names field, enter all the alias names required to direct call signals to your
system.
• Gateway protocol - Select SL-1 for BCM 2.5 systems. Select CSE for BCM 3.0 and newer
systems. Or select None.
• Registration TTLs: Specifies the KeepAlive interval
• Gateway TTLs: This protocol should match all other systems on the network.
• Status: This field displays the current status of the gatekeeper.
3 Suggested next steps:
• Ensure router settings, firewalls and system ports are set correctly to support IP traffic over
the trunks.
• "Configuring lines" on page 129
• "Configuring lines: Target lines" on page 141
• "Setting up VoIP trunks for fallback" on page 391
• Ensure private network dialing plan and access settings matches the rest of the private
network:
• Private networking:
• Assigning the VoIP line pools to system telephones: "Line Access - Line Pool Access tab"
in the Device Configuration Guide (NN40020-300).
NN40020-603 NN40020-603
"Using CS 1000 as a gatekeeper" on page 389
"VoIP interoperability: Gatekeeper configuration" on page
"Dialing plan: Private network settings" on page 281
"Private networking: Basic parameters" on page 315
for specific information about
389.