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Voice function

4.1

numbers. Tariff metering is transmitted only during calls to GSM network.

Connected PBX must provide the tariff metering during calls to FXO interface.

You can also program   to transmit tariff pulses as call

connect/disconnect signaling if your PBX cannot receive telephone line polarity

reversal signaling.

Gateway for extension line of PBX

Extension line of PBX is connected to FXO interface on SmartGate. FXS interface

remains unconnected.



interface. You can fill in some rows in FXO routing table to reject given calls, for

automatic call routing etc.

Fill in GSM routing table to route an incoming GSM calls to FXO interface.

It is necessary to set up conditions for call-disconnect detection from PBX. If

detects busy tone or continuous tone from PBX, it disconnects the

established GSM call.

Outgoing call on FXO interface

1.   detects a ringing signal from PBX and, if it is possible to

establish GSM call, it hooks off the line after preprogrammed number of rings.

transmits dial tone and green LED for line starts flashing.

2. Dial the GSM subscriber number using DTMF. The delay between dialed digits

may not exceed 5 s (programmable parameter). The number is evaluated as

complete after this timeout.

3. A short delay follows the last-dialed digit for to await further

dialing. Then, the dialing end is signaled and connection is established.

4. Prefix of dialed number is compared with filled rows of FXO routing table. The

call is rejected or routed to GSM network according to the routing table.

5. If the called subscriber is available, you can hear the ringing tone. If not, 

SmartGate hangs up.

6. When the called subscriber answers the call, a call is established. The green

Line LED is permanently on during the call.

7. 

line, detects it and disconnects the GSM call.

Incoming call from GSM network

1. The CLI is compared with filled rows of GSM routing table. The call is rejected,

or routed to FXO interface  extension line of PBX according to the routing

table.

2. hooks off the line. If there is 

for given CLI, dials it using DTMF.

3. The GSM subscriber hears the ringing tone from PBX if the automatic dial in

function was applied, if not he hears dial tone from PBX and he can dial

required extension himself.

4. The call termination is the same as in case of outgoing call.

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