Version 6.6 703 October 2014
Installation & Operation Manual 41. PSTN Gateway and IP-to-IP Applications
Parameter
Name
Type Provisioning
Type
Description
2
nd
DTMF
2833
Negotiation
Option
Enum
NotConfigured, NotSupported,
InfoNortel, Notify, InfoCisco,
Rfc2833, InfoKorea
Instant Determines a single or several
preferred transmit DTMF
negotiation methods.
Not configured – use the
global parameter; (default).
Not Supported – No
negotiation - DTMF digits are
sent according to the
parameters
DTMFTransportType and
RFC2833PayloadType.
INFO (Nortel) – Sends
DTMF digits according to
IETF <draft-choudhuri-sip-
info-digit-00>.
NOTIFY – Sends DTMF
digits according to <draft-
mahy-sipping-signaled-
digits-01>.
INFO (Cisco) – Sends DTMF
digits according to Cisco
format.
RFC 2833 – Sends DTMF
according to RFC 2833.
INFO (Korea) – Sends
DTMF digits according to
Korea Telecom format.
Declare
RFC2833 in
SDP
Enum
NotConfigured, DontDeclare,
Declare
Instant Defines the supported Receive
DTMF negotiation method.
Not Configured – use the
global parameter;
Don't Declare – don't declare
RFC 2833 telephony-event
in SDP.
Declare – declare RFC 2833
telephony-event in SDP.