Different countries (such as the UK) use the pound sign (#, hash mark, number sign) as the end-of-dial code. The system interrupts the dialing to the CO as soon as the character to be sent would have been a '#' and switches the connection to the talking state.

This feature is only used when the COP parameter SFRM is set. If the first digit that was sent to the CO was an asterisk (*) or pound sign (#), the system assumes that the so-called 'Value Added Network Services' are being used. The system then sends out # and generates end-of-dial via the timer (see above).

If the parameter SFRM is not set, all characters of a 16-entry keypad are sent to the remote exchange (also applies to DIP).

This procedure also applies to a DTMF AnaTe. The 1A procedure described later can be interrupted by dialing the pound sign.

You can use the same method when dialing with LCR. In MFC-R2, the "dial complete" signal is converted to I-15.