Appendix C ~ Serial Commands

25

DIAL

This command generates DTMF tones. This capability remains active after the call is

placed so tones can be issued for use with voice mail and pagers.

Command form: DIAL <STRING>

Explanation

STRING

is any valid combination of touch tone characters. A comma

 

indicates a two-second pause. STRING has a maximum length

 

of 15 characters. Valid characters are 0 through 9, A through

 

D, *, # and “,”.

Return values

DIAL returns the dialed string of numbers. For example, the following command

dials the number 801-975-7200: DIAL 9,8019757200 A “9” and a pause are

generated to get an outside line on a PBX. The following is returned out the serial

port: DIAL 9,8019757200

EC

This command changes or reports back the state of the echo canceller.

Command form: EC <X>

Explanation

Value

0= Sets the state to Off

 

1 = Sets the state to On

 

Null = Returns the current state

Return values

The command will return the updated condition (On=1, Off=0) of the echo canceller

in the same format as the command.

ERL

This command reports back the echo return loss (ERL) in dB.

Command form: ERL

Return Values

The command will return the ERL in the same format as the command (ERL 20).

ERLE

This command reports back the echo return loss enhancement (ERLE) in dB.

Command form: ERLE

Return values

The command will return ERLE in the same format as the command (ERLE 20).

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ClearOne comm GT1524 operation manual Dial, Erle