2N SmartGate, User Manual

Page: 15 / 89

Description 2.1
15
Telephone Line Tones – Operational Tones
The GSM gateway sends tones to the telephone line to indicate the line status. The
tone frequency is 425 Hz in initial setting. Frequency is programmable; it is possible to
set up double frequency tones.
Dial tone

continuous or morse A

2N® SmartGate is ready to receive dialing.
Ringing tone

Only

The called subscriber's telephone is ringing.

The GSM network or connected PBX transmits this tone. For connection to
GSM network is possible to generate this tone in Gateway according to
setting. This tone is generated till the GSM network starts to transmit
Ringback tone.
Busy tone

, programmable cadency
In case of call routing to GSM network 2N® SmartGate generate busy tone in any of
the following cases:

The SIM card has not been installed.

2N® SmartGate is not registered to GSM network.

2N® SmartGate is registered into a foreign network but roaming is disabled.

The called subscriber line is busy.

The called subscriber hangs up (disconnection).

The called number has too many digits (more than 30).

The called number is barred.
In case of call routing to SmartGate‟s FXO interface 2N® SmartGate generate busy
tone in any of the following cases:

Line is not connected. There is no current on the line.

The called number has too many digits (more than 30).

The called number is barred.

If the called subscriber line is busy or called subscriber hangs up, busy tone is
generated by PBX.