Grandstream Networks HT502 User Manual page 61

SLIC Setting Dependent on standard phone type (and location)
Caller ID Scheme
Bellcore/Telcordia, ETSI-FSK, ETSI-DTMF, SIN 227 – BT, & NTT Japan
Polarity Reversal Default is No. If set to "Yes", polarity will be reversed upon call establishment
and termination.
Loop Current Default is No. Set it to Yes if the traditional PBX you are using with HT502 uses
Disconnect this method for signaling call termination. Method initiates short voltage drop on
the line when remote (VoIP) side disconnects an active call.
Play busy/reorder Default is No. If set to Yes, it will play busy/reorder tone before loop current
tone before Loop disconnect upon call fail.
Current Disconnect
Loop Current Here can be configured duration of such voltage drop described in topic above.
Disconnect Duration
Enable Hook Flash Default is Yes. If set to "No", FLASH button could only be used for terminating
calls.
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.
On-hook timing is the minimum time for an on-hook event to be validated.
On Hook Timing
Gain Voice path volume adjustment.
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.
• Rx is a gain level for signals transmitted by FXS
• Tx is a gain level for signals received by FXS.
HT502 User Manual
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