Grandstream Networks GXP2110, GXP1450, GXP2100 user manual Firmware Version

Transfer on Conference Hangup

Check SIP User ID for incoming INVITE

Preferred Vocoder

SRTP Mode

Symmetric RTP

Silence Suppression

Voice Frames Per TX

No Key Entry Timeout (s)

Use # as Dial Key

G723 Rate

G.726-32 Packing Mode

iLBC Frame Size

iLBC Payload Type

FIRMWARE VERSION 1.0.4.23

Contact header information for attended transfer. The default setting is "No".

Defines whether or not the call is transferred to the other party if the initiator of the conference hangs up. 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".

7 different vocoder types are supported on the phone, including G.711U-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.

Enables the SRTP mode based on your selection. The default setting is "Disabled".

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 users, it is recommended to use the default setting, as incorrect settings may influence the audio quality.

Defines the timeout (in seconds) for no key entry. If no key is pressed after the timeout, the digits will be sent out. The default value is 4 seconds.

Allows users to configure the "#" key as the "Send" key. If set to "Yes", the "#" key will immediately dial out the input digits. In this case, this key is essentially equivalent to the "Send" key. If set to "No", the "#" key is included as part of the dialing string.

Selects encoding rate for G723 codec. The default value is 5.3kbps.

Selects "ITU" or "IETF" for G726-32 packing mode.

Selects iLBC packet frame size. The default value is 30ms.

Specifies iLBC Payload type. The default value is 97. The valid range is

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