NSE: Difference between revisions
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NSE (Named Signaling Events) is a proprietary protocol to switch from voice to passthrough | NSE (Named Signaling Events) is a proprietary protocol to switch from voice to passthrough for fax/modem communication 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 == | ||
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</pre> | </pre> | ||
This adds a new SIP SDP entry | This adds a new SIP SDP entry that looks like this for initial negotiation: | ||
<pre> | <pre> | ||
a=rtpmap:100 X-NSE/8000 | a=rtpmap:100 X-NSE/8000 | ||
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</pre> | </pre> | ||
The system does not send a SIP re-invite, but instead will send this NSE event 192. | The system does not send a SIP re-invite, but instead will send this NSE event 192. | ||
===Call Flow=== | |||
[[Image:NSE_call_flow.png| ]] | |||
== Configuration == | |||
*[[Toolpack v2.7: NSE configuration]] | |||
== References == | == References == | ||
*[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] | ||
[[category:Glossary]] | [[category:Glossary]] | ||
Latest revision as of 13:41, 28 March 2018
NSE (Named Signaling Events) is a proprietary protocol to switch from voice to passthrough for fax/modem communication 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 that looks 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.
Call Flow
