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Command reference
sip-compatible
Use sip-compatible to configure SIP compatibility with a third-party device.
Use undo sip-compatible to restore the default.
Syntax
sip-compatible { t38 | x-param }
undo sip-compatible { t38 | x-param }
Default
SIP compatibility is not configured.
Views
SIP view
Predefined user roles
network-admin
Parameters
t38: Configures SIP compatibility for standard T.38 fax. With this keyword specified, the router
excludes :0 from the following SDP parameters in the originated re-INVITE messages:
T38FaxTranscodingJBIG.
T38FaxTranscodingMMR.
T38FaxFillBitRemoval.
This keyword is required when the router interoperates with a third-party softswitch device to
exchange T.38 fax messages.
x-param: Configures SIP compatibility for fax pass-through and modem pass-through. With this
keyword specified, the router adds SDP description information for fax pass-through and modem
pass-through to outgoing re-INVITE messages. This keyword is required when the router
interoperates with a third-party softswitch device to perform fax pass-through and modem
pass-through.
Usage guidelines
The t38 and x-param keywords can be both configured to interoperate with a third-party softswitch
device.
Examples
# Configure SIP compatibility for standard T.38 fax.
<Sysname> system-view
[Sysname] voice-setup
[Sysname-voice] sip
[Sysname-voice-sip] sip-compatible t38
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