AudioCodes Mediant 600 - TTY;TDD Parameters

Version 6.4 681 March 2012
SIP User's Manual A. Configuration Parameters Reference
Parameter Description
Call Forward on No Reply
[SuppServCodeCFNR]
Defines the prefix code for activating Call Forward on No Reply sent
to the softswitch.
The valid value is a string. The default is an empty string.
Note: The string must be enclosed in single apostrophe (e.g., ‘*72’).
Call Forward on No Reply
Deactivation
[SuppServCodeCFNRDeact]
Defines the prefix code for deactivating Call Forward on No Reply
Deactivation sent to the softswitch.
The valid value is a string. The default is an empty string.
Note: The string must be enclosed in single apostrophe (e.g., ‘*72’).
A.12.5.14 TTY/TDD Parameters
The TTY (telephone typewriter) or telecommunications device for the deaf (TDD) is an
electronic device for text communication via a telephone line for those with impaired
hearing. The TTY/TDD parameters are described in the table below.
Table A-54: TTY Parameters
Parameter Description
[TTYTransportType]
Defines the device's transferring method of TTY signals during a
call.
 [0] = Disable (default)
 [2] = Relay (signals sent over the EVRC codec) - TTY phone
device transfer using In-Band Relay mode for TTY signal
transport.
Note: To support TTY Relay (2), you must configure the device to
use the EVRC coder.