Chapter 6. Configuration
61202.029L2-1 ISU 128 User Manual 37
Answer Tone
The Answer tone option (shown in Figure 6-9) enables the transmission of a
modem answer tone at the start of voice and audio calls. The purpose of this
tone is to disable echo suppression and echo cancelling on the circuit in order
to get a clear digital circuit. This may be necessary on some long distance cir-
cuits. The specifics of the tone are 4 seconds, 2100 Hz at a -10 dB level, with
phase reversals every 475 ms.
Figure 6-9
Answer Tone Menu Tree
No Answer Tone (Default)
This option disables Answer tone on incoming calls.
Incoming Tone
This option enables Answer tone on incoming calls.
Outgoing Tone
This option enables Answer tone on outgoing calls.
Always Tone
This option enables Answer tone on either incoming or outgoing calls.
3=CONFIG
1=Netw. options
2=DTE options
3=Protocol
4=Quick setup
5=Remote config
1=Dial Line
2=Leased Line
1=Switch protocl
2=Call type
3=Terminal ID
4=Dial options
5=Auto answer
6=Answer tone
7=Connect Timout
8=Call Screening
1=No answer tone
2=Incoming tone
3=Outgoing tone
4=Always tone