Grandstream Networks GXP1100 User Manual page 35

Check Domain
Certificates
Validate Incoming
Messages
Check SIP User ID for
incoming INVITE
Accept Incoming SIP
from Proxy Only
Authenticate Incoming
INVITE
Account 1 -> Audio Settings
Send DTMF
DTMF Payload Type
Preferred Vocoder
Use First Matching
Vocoder in 200OK SDP
SRTP Mode
Crypto Life Time
Symmetric RTP
Silence Suppression
Voice Frames Per TX
FIRMWARE VERSION 1.0.8.4
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
received 200OK SDP as the codec. The default setting is "No".
Enables the SRTP mode based on your selection. The default setting is
"Disabled".
Choose whether to include the lifetime parameter in SRTP crypto offer.
Defines whether symmetric RTP is supported or not. The default setting is
"No".
Controls the silence suppression/VAD feature of the audio codec G.723 and
G.729. If set to "Yes", when silence is detected, a small quantity of VAD
packets (instead of audio packets) will be sent during the period of no talking.
If set to "No", this feature is disabled. The default setting is "No".
Configures the number of voice frames transmitted per packet. When
configuring this, it should be noted that the "ptime" value for the SDP will
change with different configurations here. This value is related to the codec
used and the actual frames transmitted during the in payload call. For end
GXP1100/GXP1105 USER MANUAL Page 33 of 53