Grandstream GXW42xx User Manual - Manual (Page 48)

FIRMWARE 1.0.5.8 GXW42XX USER MANUAL PAGE 46 OF 62
Check SIP User ID
for Incoming
INVITE
If set to "Yes", SIP User ID will be checked in the Request URI of the incoming INVITE. If it
doesn't match the phone's SIP User ID, the call will be rejected. Direct IP calling will also be
disabled.
Accept Incoming
SIP from Proxy
Only
If set to "Yes", SIP User ID will be checked in the Request URI of the incoming INVITE. If it
doesn't match the phone's SIP User ID, the call will be rejected. Direct IP calling will also be
disabled.
Authenticate
Incoming INVITE
If set to "Yes", the phone will challenge the incoming INVITE for authentication with SIP 401
Unauthorized response.
Fax Settings
Fax Mode T.38 (Auto Detect) FoIP by default, or Pass-Through (must use codec PCMU/PCMA)
Fax Tone
Detection Mode
Default is Callee. This decides whether Caller or Callee sends out the re-INVITE for T.38 or
Fax Pass Through.
Send Re-INVITE
After Fax
Completion
Default is No , If set to “Yes”, device will send an INVITE with audio vocoders upon competition
of Fax to continue session in audio only.
Send Re-INVITE
After Fax Tone
If s et to “Yes”, device will send a Re-INVITE after Fax tone is detected, disabling will only work
under Broadsoft feature.
Enable Silence
Detection for Fax
Disconnect
For fax machines that do not send a Disconnect when fax is done. This option
Enables/Disables the detection of silence in order to know the fax has finished. The silence
period is non-configurable and fixed to 7 seconds.
Audio Settings
Preferred DTMF
method (in listed
order)
The GXW42XX supports up to 3 different DTMF methods including in-audio, via RTP
(RFC2833) and via Sip Info. The user can configure DTMF method in a priority list.
Disable DTMF
Negotiation
Default is No. If set to yes, use above DTMF order without negotiation
Enable Fast
RFC2833
Default is No. DTMF will use 240 ms timing. If set to yes, DTMF will 100 ms instead.
DTMF Payload
Type
Sets the payload type for DTMF using RFC2833.