Grandstream Networks GXP1450 User Manual page 51

Callee Request Timer
Force Timer
UAC Specify Refresher
UAS Specify Refresher
Force INVITE
Account x -> SIP Settings -> Security Settings
Check Domain
Certificates
Validate Incoming
Messages
Check SIP User ID for
incoming INVITE
Accept Incoming SIP
from Proxy Only
Authenticate Incoming
INVITE
Account x -> Audio Settings
Send DTMF
DTMF Payload Type
Preferred Vocoder
Use First Matching
FIRMWARE VERSION 1.0.5.58
a session timer when it makes outbound calls.
If set to "Yes" and the remote party supports session timers, the phone will use
a session timer when it receives inbound calls.
If Force Timer is set to "Yes", the phone will use the session timer even if the
remote party does not support this feature. If Force Timer is set to "No", the
phone will enable the session timer only when the remote party supports this
feature. To turn off the session timer, select "No".
As a Caller, select UAC to use the phone as the refresher; or select UAS to
use the Callee or proxy server as the refresher.
As a Callee, select UAC to use caller or proxy server as the refresher; or select
UAS to use the phone as the refresher.
The Session Timer can be refreshed using the INVITE method or the UPDATE
method. Select "Yes" to use the INVITE method to refresh the session timer.
Choose whether the domain certificates will be checked or not when TLS/TCP
is used for SIP Transport. The default setting is "No".
Choose whether the incoming messages will be validated or not. The default
setting is "No".
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.
The default setting is "No".
When set to "Yes", the SIP address of the Request URL in the incoming SIP
message will be checked. If it doesn't match the SIP server address of the
account, the call will be rejected. The default setting is "No".
If set to "Yes", the phone will challenge the incoming INVITE for authentication
with SIP 401 Unauthorized response. The default setting is "No".
Specifies the mechanism to transmit DTMF digits. There are 3 supported
modes: in audio which means DTMF is combined in the audio signal (not very
reliable with low-bit-rate codecs), via RTP (RFC2833), or via SIP INFO.
Configures the payload type for DTMF using RFC2833. The default value is
101.
7 different vocoder types are supported on the phone, including G.711 U-law
(PCMU), G.711 A-law (PCMA), G.723.1, G.729A/B, G.722 (wide band), iLBC
and G72-32. Users can configure vocoders in a preference list that is included
with the same preference order in SDP message.
When set to "Yes", the device will use the first matching vocoder in the
GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 51 of 80