User's Manual

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GXW42xx User Manual
Version 1.0.5.43
SRTP Mode
Default is Disabled. Other options are Enabled but not forced, and
Enabled and forced.
It uses SDP Security Description to exchange key. Please refer
SDES: http://www.apps.ietf.org/rfc/rfc4568.html
SRTP: http://www.apps.ietf.org/rfc/rfc3711.html
Crypto Life Time
Default setting is Yes. Enable or disable the crypto life time when using
SRTP. If users set to disable this option, phone does not add the crypto
life time to SRTP header.
Silence Suppression (VAD)
Default is No. VAD allows detecting the absence of audio and conserve
bandwidth by preventing the transmission of "silent packets" over the
network.
Jitter Buffer Type
Select either Fixed or Adaptive based on network conditions.
Jitter Buffer Length
Select Low, Medium or High based on network conditions.
• High (initial 200ms, min 40ms, max 600ms) Note: not all
vocoders can meet the high requirement
• Medium (initial 100ms, min 20ms, max 200ms)
• Low (initial 50ms, min 10ms, max 100ms)
RTCP
With this feature enabled, the device will send RTCP Sender Report
during the conversation until it’s ended.
SLIC Setting
Depends on standard phone type (and location)
Ringing Frequency
This feature allows to customize ringing frequency.
Caller ID Scheme
Select the value according to the local Telco standard where the
GXW42XX is installed.
Please refer to the pull-down list to select.
Polarity Reversal
Default is No. If set to “Yes”, polarity will be reversed upon call
establishment and termination.
Loop Current Disconnect
Set to Yes if the traditional PBX you are using with GXW42XX uses this
method for signaling call termination. Default is No.
Play busy/reorder tone before
Loop Current Disconnect
Default is No. If set to yes, it will play busy/reorder tone before loop
current disconnect upon call fail.