Grandstream Networks HT802 User Manual

FIRMWARE VERSION 1.0.0.5 HT802 USER MANUAL Page 37 of 46
Jitter Buffer Type
Select either Fixed or Adaptive based on network conditions. Default is Adaptive.
Jitter Buffer Length
Select Low, Medium or High based on network conditions. Default is Medium.
 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)
SRTP Mode
This option defines different implementation of support SRTP (squired RTP)
transmission mode. Select between Disabled, Enabled but not Forced, and Enabled
and Forced. Default is Disabled.
SLIC Setting
Dependent on standard phone type (and location)
Caller ID Scheme
Bellcore/Telcordia, ETSI-FSK, ETSI-DTMF, SIN 227 – BT, & NTT Japan, Brazil
Polarity Reversal
Default is No. If set to “Yes”, polarity will be reversed upon call establishment and
termination.
Loop Current
Disconnect
Default is No. Set it to Yes if the traditional PBX you are using with HT802 uses this
method for signaling call termination. Method initiates short voltage drop on the line
when remote (VoIP) side disconnects an active call.
Loop Current
Disconnect Duration
Default value is 200. Here can be configured duration of such voltage drop described in
topic above. HT802 supports a Duration Range from 100 to 10000 ms.
Hook Flash Timing
Time period when the cradle is pressed (Hook Flash) to simulate FLASH. To prevent
unwanted activation of the Flash/Hold and automatic phone ring-back, adjust this time
value. Default values are 300 minimum and 1100 maximum. HT802 supports a
range from 40 to 2000 ms.
On Hook Timing
On-hook timing is the minimum time for an on-hook event to be validated. Default
value is 400 . HT802 supports a range from 40 to 2000 ms.
Gain
Voice path volume adjustment.
• Rx is a gain level for signals transmitted by FXS
• Tx is a gain level for signals received by FXS.
Default = 0dB for both parameters. Loudest volume: +6dB Lowest volume: -6dB.
User can adjust volume of call on either end using the Rx Gain Level parameter and
the Tx Gain Level parameter located on the FXS Port Configuration page.
If call volume is too low when using the FXS port (ie. the ATA is at user site), adjust
volume using the Rx Gain Level parameter under the FXS Port Configuration page.
If voice volume is too low at the other end, user may increase the far end volume using
the Tx Gain Level parameter under the FXS Port Configuration page.
Disable Line Echo
Canceller (LEC)
Default is No. If set to “Yes” LEC will be disabled per call base. Recommended for
FAX/Data calls.
Outgoing Call Duration
Limit
Default is 0. When set to 0. There will be no limit. Time range (0-180 minutes).

Grandstream Networks HT802 Specifications

General

Brand	Grandstream Networks
Model	HT802
Category	Adapter
Language	English