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Example of Creating a Virtual Tie Line:
PBX “A” user dials 7123, where 7 is the direction towards the remote PBX “B” and
123 is the extension number. PBX “A” directs the phone call via the connected
GSM gateway “A”. The GSM gateway “A” receives the dial 7123, replaces the
digit 7 for real number of GSM gateway “B” (e.g. 777 666 555) and dials the
number. GSM gateway “B” rings the PBX “B” which will pick-up the phone call and
add the DISA prefix. After PBX “B” answers the call, the GSM gate “A” will
continue dialing extension 123 (using DTMF codes). In moment the extension 123
on PBX “B” answers the phone call it will be connected with user of the PBX “A”
who initialized the phone call.
Enabling – Disabling the Feature
Dial Command
SMS Command
Default
2800x#...
TIEENABLE x
Preset from production to 0
Where x=1 enables the virtual tie line feature and x=0 disables the feature.
Delay of Additional DTMF Transmission
This parameter determines the delay before the additional DTMF selection starts
after the phone call is answered. Additional DTMF selection enables dialing an
extension number from the incoming call - usually using the DISA selection.
Dial Command
SMS Command
Default
2900x#...
TIEDELAYx
Preset from production to 5 (×0,1 s)
Where x is a number between 0 and 255 which determines the length of delay in
tenths of a second.
DTMF Pulse Width
This parameter determined length of DTMF pulse of the additional selection.
Dial Command
SMS Command
Default
3000x#...
TIEWIDTH x
Preset from production to 4 (×0,1 s)
Where x is a number between 3 and 10 which determines the length of the pulse
in a tenths of a second.
Enter Prefix Dial
This is the initial number of the short-code dialing coming to the gateway which
will be replaced by phone number of the remote PBX. The gateway can
remember up to 5 different numbers for 5 different phone numbers of remote
PBX’s.