General Features
214
l
404 (Not Found)
l
480 (Temporarily Unavailable)
l
486 (Busy Here)
l
603 (Decline)
Topic
Return Code for Refused Call Configuration
Return Code for Refused Call Configuration
The following table lists the parameters you can use to configure the return code for the refused call.
Parameter
features.normal_refuse_code
<y0000000000xx>.cfg
Description
It configures a return code and reason of SIP response messages when the phone rejects an incom-
ing call. A specific reason is displayed on the caller’s phone screen.
Permitted
Values
404
-Not Found
480
-Temporarily Unavailable
486
-Busy Here
603
-Decline
Default
486
Web UI
Features > General Information > Return Code When Refuse
Accept SIP Trust Server Only
Accept SIP trust server only enables the phones to only accept the SIP message from your SIP server and outbound
proxy server. It can prevent the phone from receiving the ghost calls whose phone number maybe 100, 1000 and
so on. If you enable this feature, the phone cannot accept an IP address call.
Topic
Accept SIP Trust Server Only Configuration
Accept SIP Trust Server Only Configuration
The following table lists the parameters you can use to configure accept SIP trust server only.
Parameter
sip.trust_ctrl
<y0000000000xx>.cfg
Description
It enables or disables the phone to only accept the SIP message from the SIP and outbound proxy
server.
Permitted
Values
0
-Disabled
1
-Enabled, users cannot accept the IP call
Default
0
Web UI
Features > General Information > Accept SIP Trust Server Only
100 Reliable Retransmission
As described in
, the 100rel tag is for the reliability of provisional responses. When presented in a Sup-
ported header, it indicates that the phone can send or receive reliable provisional responses. When presented in a
Require header in a reliable provisional response, it indicates that the response is to be sent reliably.
Example of a SIP INVITE message: