Table 16 Account Codec & Rtp Settings - Grandstream Networks GAC2500 Administration Manual

Check Domain Certificates
Validate Certification Chain
Auto-filling Pickup Feature
Code
Pickup Feature Code
Table 16 Account Codec & RTP Settings
Preferred Vocoder
Codec Negotiation Priority
Use First Matching Vocoder
in 200OK SDP
iLBC Frame Size
G726-32 ITU Payload
G726-32 Dynamic PT
Opus Payload Type
G.722.1 Rate
G.722.1 Payload Type
DTMF
DTMF Payload Type
Firmware Version 1.0.1.34
server that the device is behind a NAT/Firewall. If it is set to "Yes", it will
remove the Route header from SIP requests. The default setting is "No".
Defines whether the domain certificates will be checked when TLS/TCP is
used for SIP Transport.
Defines whether the certification chain will be validated when TLS/TCP is
used for SIP Transport.
If set to "Yes", the call park feature code will be automatically filled in dial
screen.
Configures the pickup feature code for call parks.
It lists the available and enabled audio codecs for this account. Users
can enable the specific audio codecs by moving them to the Selected
box and set them with a priority order from top to bottom. This
configuration will be included with the same preference order in the SIP
SDP message. Arrange your preferred vocoder orders using the Up and
Down button.
Configures the phone to use which codec sequence to negotiate as
the callee. When set to "Caller", the phone negotiates by SDP codec
sequence from received SIP Invite; When set to "Callee", the phone
negotiates by audio codec sequence on the phone. The default
setting is "Callee".
Configures whether the device will use first matching vocoder in 200OK
SDP to call. If set to "No", then make coding consultation according to
the audio encoder sequence by default. The default setting is "No".
Specify the iLBC(Internet Low Bitrate Codec) frame size when iLBC is
selected. It could be 20ms or 30ms. The default setting is 30ms.
This option is used to configure G726-32 payload type for ITU packing
mode. "2" means use fixed value 2, "dynamic" means use the dynamic
value. The default setting is "2".
This option is used to configure G726-32 payload type, and the valid
range is 96 to 127. The default setting is 126.
It is used to enter a desired value (96-127) for the payload type of the
Opus codec. The default value is 123.
Supports 24kbps or 32kbps, Please confirm it with your service
provider. The default setting is 24kbps.
The range is 100-126. The default setting is 104.
It is used to set the parameter to specify the mechanism to transmit
DTMF (Dual Tone Multi-Frequency) signals. There are 3 supported
modes: in audio, RFC2833, or SIP INFO.
• In audio, which means DTMF is combined in the audio signal (not very
reliable with low-bit-rate codecs);
• RFC2833, which means to specify DTMF with RTP packet. Users
could know the packet is DTMF in the RTP header as well as the type
of DTMF;
• SIP INFO, which use SIP info to carry DTMF. The defect of this mode
is that it's easily to cause desynchronized of DTMF and media packet if
the SIP and RTP messages are required to transmitted respectively.
The default setting is "RFC2833".
It is used to configure the RTP payload type that indicates the
transmitted packet contains DTMF digits using RFC2833. The default is
101. The valid range is from 96 to 127.
GAC2500 Administration Guide Page 24 of 54