Call Deflection
From Snom Asterisk Portal
Contents |
Feature description
Call Deflection allows a called endpoint to redirect the unanswered call to another endpoint during the call setup phase (i.e. "ringing phone"). It is done by either manually pressing the transfer softkey while the phone is ringing or automatically by the phone under special circumstances – e.g. when the user is busy.
Call deflection is one of the several forms of call diversion (also known as call forwarding) defined under the H.450.3 specification. A more detailed description on how this feature works and how to use it can be found in the snom wiki.
Configure Asterisk
Asterisk processes the SIP message code 302 "Moved Temporarily" by default out of the box. No special configuration steps needed.
Configure snom phones
snom 3xx
Firmware version 7.3.30
- Ensure that the option "Disable deflection (code 302)" under "Advanced" > section "Phone Behavior" > "Disable deflection (code 302)" is set to "off".
Firmware version 8.2.29
- Ensure that the option "Disable deflection (code 302)" under "Advanced" > Tab "SIP/RTP" > "Disable deflection (code 302)" is set to "off".
snom m3
No special configuration steps are needed to enable call deflection.
How to use
See Call Deflection on snom's knowledgebase for a detailed instruction.
FAQ
When I press the "Transfer" button on my ringing phone, the caller receives a busy signal and is not redirected.
- Cause: Possibly the setting "Disable deflection (code 302)" is turned "on" in your phone configuration.
- Solution: Use the Web-GUI of your snom phone to set the "Disable deflection (code 302)" setting to "off" (which is default) or correct the settings of your provisioning server and re-provision your snom phone.
