Grandstream Networks GRP2601 Administration Guide

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GRP260x Administration Guide
Version 1.0.1.18
DTMF Payload Type
Configures the payload type for DTMF using RFC2833. Cannot be the same
as iLBC or OPUS payload type.
Enable Audio RED
with FEC
If set to "Yes", FEC will be enabled for audio call.
The default setting is "Yes".
Audio FEC Payload
Type
Configures audio FEC payload type. The valid range is from 96 to 126.
The default value is 121.
Audio RED Payload
Type
Configures audio RED payload type. The valid range is from 96 to 126.
The default value is 124.
Silence Suppression
Controls the silence suppression/VAD feature of the audio codecs except
forG.723 (pending) and G.729. If set to “Yes”, a small quantity of RTP
packets containing comfort noise will be sent during the periods of silence. If
set to “No”, this feature is disabled. Default setting is “No”
Jitter Buffer Type
Selects either Fixed or Adaptive for jitter buffer type, based on network
conditions. The default setting is “Adaptive”.
Jitter Buffer Length
Selects jitter buffer length from 100ms to 800ms, based on network
conditions. The default setting is “300ms”.
Voice Frames Per TX
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. The default setting is 2.
G.723 Rate
Selects encoding rate for G723 codec.
RTP Settings
SRTP Mode
Enable SRTP mode based on your selection from the drop-down menu.
• No
• Enabled but Not forced
• Enabled and Forced
• Optional
The default setting is “No”.
SRTP Key Length
Allows users to specify the length of the SRTP calls. Available options are:
• AES 128&256 bit
• AES 128 bit
• AES 256 bit
Default setting is AES 128&256 bit

Grandstream Networks GRP2601 Specifications

General

Brand	Grandstream Networks
Model	GRP2601
Category	IP Phone
Language	English