NSE: Difference between revisions
m (Added link to Configuring Fax Relay with NSE) |
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NSE (Named Signaling Events) is a proprietary protocol to switch from voice to | NSE (Named Signaling Events) is a proprietary protocol to switch from voice to passthrough, without involving SIP. It uses a proprietary event, based on NTE (Named Telephone Events). NTE is not proprietary, but NSE is. | ||
== TelcoBridges and NSE == | == TelcoBridges and NSE == | ||
We currently | We currently support NSE events: | ||
<pre> | <pre> | ||
192 (switch to passthru) | 192 (switch to passthru) | ||
| Line 8: | Line 8: | ||
194 (switch back to voice) | 194 (switch back to voice) | ||
</pre> | </pre> | ||
This adds a new SIP SDP entry looking like this for initial negotiation: | |||
<pre> | |||
a=rtpmap:100 X-NSE/8000 | |||
a=fmtp:100 192-194 | |||
</pre> | |||
The system does not send a SIP re-invite, but instead will send this NSE event 192. | |||
== References == | == References == | ||
*[[Configure_Fax_Relay_C|Configure | *[[Configure_Fax_Relay_C|Configure NSE for Passthrough]] | ||
*[http://tools.ietf.org/html/rfc2833 RFC 2833] | *[http://tools.ietf.org/html/rfc2833 RFC 2833] | ||
*[https://supportforums.cisco.com/docs/DOC-1381 list of NSE events] | *[https://supportforums.cisco.com/docs/DOC-1381 list of NSE events] | ||
Revision as of 14:56, 9 November 2012
NSE (Named Signaling Events) is a proprietary protocol to switch from voice to passthrough, without involving SIP. It uses a proprietary event, based on NTE (Named Telephone Events). NTE is not proprietary, but NSE is.
TelcoBridges and NSE
We currently support NSE events:
192 (switch to passthru) 193 (disable echo) 194 (switch back to voice)
This adds a new SIP SDP entry looking like this for initial negotiation:
a=rtpmap:100 X-NSE/8000 a=fmtp:100 192-194
The system does not send a SIP re-invite, but instead will send this NSE event 192.