Grandstream Networks HT701 User Manual page 29

Symmetric RTP
Fax Mode
Re-Invite after Fax Tone
Detection Mode
Jitter Buffer Type
Jitter Buffer Length
SRTP Mode
SLIC Setting
Caller ID Scheme
Polarity Reversal
Loop Current
Disconnect
Loop Current
Disconnect Duration
Hook Flash Timing
On Hook Timing
Gain
Disable Line Echo
Canceller (LEC)
Ring Tones
Grandstream Networks, Inc.
VoIPon www.voipon.co.uk sales@voipon.co.uk Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299
Default is No. When set to Yes the device will change the destination to send RTP
packets to the source IP address and port of the inbound RTP packet last received by
the device.
T.38 (Auto Detect) FoIP by default, or Pass-Through (must use codec PCMU/PCMA)
Default is Enabled. It makes the unit send out the re-INVITE for T.38 or Fax Pass
Through if a fax tone is detected.
Select either Fixed or Adaptive based on network conditions. Default is Adaptive.
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)
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.
Dependent on standard phone type (and location)
Bellcore/Telcordia, ETSI-FSK, ETSI-DTMF, SIN 227 – BT, & NTT Japan
Default is No. If set to "Yes", polarity will be reversed upon call establishment and
termination.
Default is No. Set it to Yes if the traditional PBX you are using with HT70X uses this
method for signaling call termination. Method initiates short voltage drop on the line
when remote (VoIP) side disconnects an active call.
Default value is 200. Here can be configured duration of such voltage drop described in
topic above. HT70X supports a Duration Range from 100 to 10000 ms.
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
range from 40 to 2000 ms.
On-hook timing is the minimum time for an on-hook event to be validated. Default
value is 400 . HT70X supports a range from 40 to 2000 ms.
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.
Default is No. If set to "Yes" LEC will be disabled per call base. Recommended for
FAX/Data calls.
This function lets you configure ring tone cadence preferences. User has 10 choices.
The configuration, completed in Distinctive Ring Tones block in the same page, applies
to ring tones cadences configured here.
HT-70X User Manual
Firmware Version 1.0.0.18
maximum. HT70X supports a
Page 29 of 35
Last Updated: 03/2012