New Rock Technologies MX8A Series - Page 38

User Manual HX4E/MX8A Series Voice Gateway
38 www.newrocktech.com
Name
Description
Impedance
Select the parameter of FXS port line impedance and the default value is 600 ohm. The
optional values as below:
 Complex (default value)
 600 (ohm)
 900 (ohm)
Hook flash time
min
Used by the gateway to detect Hook Flash event, the default is 75 milliseconds.
The gateway will ignore any flash that fall short of the shortest flash time. Generally,
this value should not be less than 75 milliseconds.
Hook flash time
max
Used by gateway to detect hook flash, the default is 800 milliseconds.
The gateway will regard the flash duration between Min.hookflash and
Max.hookflash as effective flash. Any flash lasting over the longest time will be
considered by gateway as hang up. Generally, this value should not be less than 800
milliseconds.
Caller ID
transmission
mode
Select transmission mode of Caller ID signal from the FXS port to the phone.
 FSK or DTMF
 SDMF or MDMF
 Sending Caller ID data before or after ringing
 Sending Caller ID data with or without parity
Hook debouncing
Used by gateway to avoid a glitch of the phone status, with default of 50 milliseconds.
When the duration from hang-up to off-hook falls short of this value, the gateway will
ignore the status variation, and consider that the phone remains in hang-up status. In
opposite case, the gateway will ignore the status variation, and consider the phone
remains in off-hook status. Effective range of setting is 10~1000 milliseconds.
Ring frequency
Set the ringing frequency to be transmitted by gateway to the phone, ranging from 15
to 50 Hz, with default of 20 Hz.
Play busy tone for
network fault
Play a busy tone upon off-hook when a network fault occurs.
Caller release
Set the delay release time of line as caller control method, with a default of 60 seconds.
Effective range of setting is 15~180 seconds.
This parameter is used in combination with the Release control by caller parameter in
Line > Feature.
Outpulsing delay
Used when gateways’ FXS port is connected with the trunk interface of PBXs. For
calls from gateway to PBX, gateways will relay the extensions to PBX after the delay
set here. Setting of 0 means no extension number relay. The default is 0 milliseconds.
Loop open
interval
This parameter is used with the loop open disconnection request. The range is from
100 ms to 6000 ms.
Polarity reversal
Set the trigger for polarity reversal, the default is Outgoing.
 Outgoing: transmit reverse polarity signal only when the outbound is connected;
 Bi-direction: transmit reverse polarity signal for the connection of both inbound and
out bound calls.
Polarity reversal
delay
The delay time from a call being answered to the transmission of reverse polarity
signal. The default value is 3 in seconds. Effective range of setting is 0 ~ 30 seconds.
Music on hold
Choose whether to play the background music while call waiting, and the default is not
to play.
Call waiting with
hunt group
Choose whether to activate hunt group feature for call waiting. Default not selected.