Generate Dual Tone Multi-Frequency (Dtmf) Tones; Dtmf Event Rtp Payload - Polycom CX5500 Administrator's Manual

Polycom CX5500 Unified Conference Station Administrator's Guide
Specify the threshold between active voices and background voices
Generate Dual Tone Multi-Frequency (DTMF)
Tones
The phone generates dual tone multi-frequency (DTMF) tones in response to user dialing on the dial pad.
Use the parameters in the table
feature. These tones, commonly referred to as touch tones, are transmitted in the real-time transport
protocol (RTP) streams of connected calls. The phone can encode the DTMF tones using the active voice
codec or using RFC 2833-compatible encoding. The coding format decision is based on the capabilities
of the remote endpoint.
Dual Tone Multi-Frequency (DTMF) Tone Generation
Central Provisioning Server
Specify if DTMF tones should be played through the
speakerphone
Specify the frequency level of DTMF digits
Specify how long the phone should wait between DTMF digits
Specify how long the phone should play each DTMF tone for
Enable or disable DTMF encoding in an RTP stream

DTMF Event RTP Payload

The phone is compatible with RFC 2833—RTP Payload for DTMF Digits, Telephony Tones, and
Telephony Signals. RFC 2833 describes a standard RTP-compatible technique for conveying DTMF
dialing and other telephony events over an RTP media stream. The phone generates RFC 2833 (DTMF
only) events but does not regenerate—or otherwise use—DTMF events received from the remote end of
the call. Use the parameters in the table
DTMF Event RTP Payload
Central Provisioning Server
Specify if the phone will use RFC 2833 to encode DTMF
Specify the phone-event payload encoding in the dynamic range to
be used in SDP offers
Polycom, Inc.
Dual Tone Multi-Frequency (DTMF) Tone Generation
DTMF Event RTP Payload
site.cfg > voice.vadThresh
template > parameter
sip-interop.cfg > tone.dtmf.chassis.masking
sip-interop.cfg > tone.dtmf.level
sip-interop.cfg > tone.dtmf.onTime
sip-interop.cfg > tone.dtmf.onTime
sip-interop.cfg > tone.dtmf.viaRtp
to set up this feature.
template > parameter
sip-interop.cfg > tone.dtmf.rfc2833Control
sip-interop.cfg > tone.dtmf.rfc2833Payload
1.1.0
to set up this
169