Cisco PGW 2200 Softswitch

Table Of Contents

Provisioning Examples for Modem and Fax Passthrough

Configuring Modem and Fax Passthrough for H.323 and SIP

Additional Provisioning Examples

Provisioning Examples for Modem and Fax Passthrough

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Updated March 2003

This document contains the following information:

•Configuring Modem and Fax Passthrough for H.323 and SIP

•Additional Provisioning Examples

Configuring Modem and Fax Passthrough for H.323 and SIP

When using the voice service voip and modem passthrough nse commands on a terminating gateway to globally set up fax or modem pass-through with NSEs, you must also ensure that each incoming call will be associated with a VoIP dial peer to retrieve the global fax or modem configuration. You associate calls with dial peers by using the incoming called-number command to specify a sequence of digits that incoming calls can match. You can ensure that all calls will match at least one dial peer by using the following commands:

Router(config)# dial-peer voice tag voip

Router(config-dial-peer)# incoming called-number . 

To configure modem and fax passthrough for all the dial peers of a gateway, use the following commands beginning in global configuration mode:

Step	Command	Purpose
1	Router (config)#voice service voip	Enters voice-service configuration mode and configures voice service for all gateway connections.
2	Router (conf-voi-serv)#modem passthrough nse codec {g711alaw | g711ulaw} redundancy sample-duration {10 | 20} maximum-sessions [1-30]	Configures modem passthrough for all dial peers of a gateway. The default is no modem passthrough. The keywords are as follows: •g711alaw—The payload type for "upspeed" to u law. •g711ulaw—The payload type for "upspeed" to a law. •redundancy—The RFC2198 for packet redundancy. •sample-duration—Redundant packets for passthrough traffic. The valid value is 10 or 20 ms. The default is 10 ms. •maximum-sessions—(Optional) The number of maximum redundancy sessions that can run simultaneously on each subsystem.

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Note See "Configuring Modem and Fax Passthrough for H.323 and SIP Support (Global)" at the following Cisco IOS User Documentation URL:

/en/US/docs/ios/12_2t/12_2t11/feature/guide/ft_ghost.html#xtocid28

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Additional Provisioning Examples

View the following application notes for additional provisioning examples:

•Provisioning Examples for Cisco PGW 2200 Softswitch

•Provisioning Examples for PGW 2200 Softswitch and AS5x00 Gateways