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Cisco IOS Voice, Video, and Fax Commands: R Through Sh
session protocol
VR-601
Cisco IOS Voice, Video, Fax Command Reference
session protocol
To specify a session protocol for calls between the local and remote routers using the packet network,
use the session protocol command in dial-peer configuration mode. To reset the default value for this
command, use the no form of this command.
session protocol {cisco | sipv2 | aal2-trunk | smtp}
no session protocol
Syntax Description
Defaults No default behaviors or values.
Command Modes Dial-peer configuration
Command History
Usage Guidelines The keyword cisco is applicable only to VoIP on the Cisco 3600 series routers. The keyword aal2-trunk
is applicable only to VoATM on the Cisco MC3810 multiservice concentrator.
This command applies to both on-ramp and off-ramp store-and-forward fax functions.
Examples The following is an example of configuring a VoIP dial peer for H.323 or SIP as the session protocol for
VoIP call signaling:
dial-peer voice 102 voip
session protocol sipv2
cisco Configure the dial peer to use proprietary Cisco VoIP session protocol.
sipv2 SIP users should use this option. This option configures the VoIP dial peer
to use IETF SIP.
aal2-trunk AAL2 nonswitched trunk session protocol.
smtp Specifies Simple Mail Transfer Protocol (SMTP) session protocol.
Release Modification
11.3(1)T This command was introduced on the Cisco 3600 series router.
12.0(4)XJ This command was modified for store-and-forward fax on the Cisco AS5300
universal access server.
12.1(1)T The sipv2 option was added.
12.1(1)XA Support was added for VoATM dial peers on the Cisco MC3810 multiservice
concentrator with the aal2-trunk keyword.
12.1(2)T Modifications to this command in Cisco IOS Release 12.1(1)XA were
integrated into Cisco IOS Release 12.1(2)T.