Polycom Version 1.4.x 17 Administrator's Manual page 79

Administrator Guide - SoundPoint
Attribute
tone.dtmf.stim.pac.offHookOnly
tone.dtmf.viaRtp
tone.dtmf.rfc2833Control
tone.dtmf.rfc2833Payload
4.6.1.3.2 Chord Sets <chord_sets/>
Chord sets are the building blocks of sound effects that use synthesized rather than
sampled audio (most call progress and ringer sound effects). A chord-set is a multi-
frequency note with an optional on/off cadence. A chord-set can contain up to four
frequency components generated simultaneously, each with its own level.
There are three blocks of chord sets:
• callProg: used for call progress sound effect patterns
• ringer
• misc (miscellaneous)
All three blocks use the same chord set specification format.
® ®
IP / SoundStation IP
Permitted
Values
0, 1
0, 1
0, 1
96-127
Copyright © 2004 Polycom, Inc
Default Interpretation
0 Not currently used.
1 If set to 1, encode DTMF in the
active RTP stream, otherwise,
DTMF may be encoded within the
signaling protocol only when the
protocol offers the option.
Note: tone.dtmf.chassis.masking
should be enabled when
tone.dtmf.viaRtp is disabled.
1 If set to 1, the phone will indicate a
preference for encoding DTMF via
RFC 2833 format in its Session
Description Protocol (SDP) offers
by showing support for the phone-
event payload type; this does not
affect SDP answers, these will
always honor the DTMF format
present in the offer since the phone
has native support for RFC 2833.
101 The phone-event payload encoding
in the dynamic range to be used in
SDP offers.
Optimization
71