NSE

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== Configuration ==
 
== Configuration ==
 
*[[Toolpack v2.7: NSE configuration]]
 
*[[Toolpack v2.7: NSE configuration]]
 +
*[[Toolpack v2.8: NSE configuration]]
 +
*[[Toolpack v2.9: NSE configuration]]
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*[[Toolpack v3.0: NSE configuration]]
  
 
== References ==
 
== References ==

Revision as of 11:52, 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.

Contents

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.

Call Flow

NSE call flow.png

Configuration

References

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