Table 11: Fxo Port Settings - Grandstream Networks HT503 FXO User Manual

Polarity Reversal
Loop Current Disconnect
Loop Current Disconnect
Duration
Enable Hook Flash
Hook Flash Timing
On Hook Timing
Gain
Disable Line Echo
Canceller (LEC)
Ring Tones
Account Active
SIP Server
Failover SIP Server
Prefer Primary SIP
Server
FIRMWARE VERSION 1.0.12.4
If set to "Yes", polarity will be reversed upon call establishment and termination.
Default is No.
Set it to "Yes" of the traditional PBX you are using with HT503 uses this method for
signaling call termination. Default is No.
A configurable period of time in which the FXS port will drop off voltage on the line to
indicate to the local party that the call is disconnected from the remote side.
(100-10000 ms. Default 200 ms)
Default is Yes. If set to "No", FLASH button could only be used for terminating calls.
The time period when the cradle is pressed (Hook Flash) to simulate a FLASH. Adjust
this time value to prevent unwanted activation of the Flash/Hold and automatic phone
ring-back.
On-hook timing is the minimum time for an on-hook event to be validated.
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 or tone frequencies according to preference. By
default tones are set to North American frequencies. Frequencies should be configured
with known values to avoid high pitch sounds.

TABLE 11: FXO PORT SETTINGS

When set to "Yes" the FXO port is activated.
SIP Server's IP address or Domain name provided by VoIP Service Provider.
This Field contains the URL or the IP address of a second SIP server, this one will be
used in case the device loses the connection with the first server.
Default is no. If set to yes it will register to Primary Server if registration with Failover
server expires
HT503 USER MANUAL
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