Cisco WRP500 Administration Manual page 30

ATA Software Features
R E V I E W D R A F T # 1 — C I S C O C O N F I D E N T I A L
Feature
DTMF
Call Progress Tone
Generation
Call Progress Tone
Pass Through
Echo Cancellation
Signaling Hook Flash
Event
Cisco WRP500 Administration Guide
3-4
Description
The WRP500 may relay DTMF digits as out-of-band events to preserve
the fidelity of the digits. This can enhance the reliability of DTMF
transmission required by many IVR applications such as dial-up
banking and airline information. DTMF is configured in the DTMF Tx
Mode parameter found in the Line tabs. See
Voice Fields."
The WRP500 has configurable call progress tones. Call progress tones
are generated locally on the WRP500 so an end user is advised of status
(such as ringback). Parameters for each type of tone (for instance a dial
tone played back to an end user) may include frequency and amplitude
of each component, and cadence information. See the Regional tab in
Appendix A, "Advanced Voice Fields."
This feature allows the user to hear the call progress tones (such as
ringing) that are generated from the far-end network. See the Regional
tab in Appendix A, "Advanced Voice Fields."
Impedance mismatch between the telephone and the IP Telephony
gateway phone port can lead to near-end echo. The WRP500 has a
near-end echo canceller that compensates for impedance match. The
WRP500 also implements an echo suppressor with comfort noise
generator (CNG) so that any residual echo is not noticeable. Echo
Cancellation is configured in the Regional, Line, and PSTN Line tabs.
See Appendix A, "Advanced Voice Fields."
The WRP500 can signal hook flash events to the remote party on a
connected call. This feature can be used to provide advanced mid-call
services with third-party-call-control. Depending on the features that
the service provider offers using third-party-call-control, the following
ATA features may be disabled to correctly signal a hook-flash event to
the softswitch:
Call Waiting Service (parameter call waiting serv set in the Line tab)
Three Way Conference Service (parameter three-way conf serv set in
the Line tab)
Three Way Call Service (parameter three-way call serv set in the Line
tab)
You can configure the length of time allowed for detection of a hook
flash using the Hook Flash Timer parameter on the Regional tab of the
Configuration Utility. See
Chapter 3
Appendix A, "Advanced
Appendix A, "Advanced Voice Fields."
Configure Voice Services