Cisco AS5350XM Configuration Manual page 157

Configuring Voice over IP
Configure Signaling on Voice Ports
The Cisco AS5350XM and Cisco AS5400XM universal gateways process and manage digital voice calls
on the universal port or voice feature card. They support voice configuration on channelized T1, E1, and
T3 trunk interfaces.
Your universal gateway supports ISDN PRI, E1 R2, and T1 CAS digital signaling. Configure your voice
ports according to signaling type. Set parameters as needed for input gain, output attenuation, echo
cancellation, various timeouts, and translation rules. Defaults are generally adequate, but may need to
be tweaked for some networks.
For ISDN configurations, voice ports (with serial interfaces acting as D channels) are created
Note
automatically when you configure an ISDN PRI group. Before configuring your voice ports, configure
both B and D channels as described in
Interface."
For more information, see the following online references:
Tip
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ISDN PRI Signaling
Signaling for ISDN PRI VoIP is handled by ISDN PRI group configuration. If you have ISDN PRI voice
ports, be sure to complete these tasks:
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Ensure that multiframes are established on the serial interfaces (acting as the D channel). Then set
parameters as needed for input gain, output attenuation, echo cancellation, various timeouts, and
translation rules.
E1 R2 Signaling
R2 is an international signaling standard for channelized E1 networks used in Europe, Asia, and
South America, equivalent to channelized T1 signaling in North America. There are two elements to R2
signaling:
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Voice over IP for the Cisco AS5300, available online at
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120t/120t3/voip5300/
Voice Over IP for the Cisco 3600 Series Commands, available online at
http://www.cisco.com/univercd/cc/td/doc/product/software/ios113ed/113t/113t_1/voip/
commands.htm
E1 R2 Signaling Configuration and Troubleshooting, available online at
http://www.cisco.com/warp/public/788/signalling/e1r2config.html
"Configuring ISDN PRI" section on page 12
"Configuring the D Channels for ISDN Signaling" section on page 22
"Configuring ISDN NFAS on Channelized T1 PRI Groups" section on page 4
Line signaling (supervision), including R2 digital, R2 analog, and R2 pulse
R2 interregister signaling (call-setup control), including compelled, noncompelled, and
semi-compelled
Cisco AS5350XM and Cisco AS5400XM Universal Gateways Software Configuration Guide
Chapter 3, "Basic Configuration Using the Command-Line
Configuring Basic VoIP
7