4.4.12 Channel Parameters; Table 4-12: Channel Parameters - AudioCodes MediaPack MP-124 User Manual

SIP User's Manual
ini File Parameter

4.4.12 Channel Parameters

The Channel Parameters define the DTMF, fax and modem transfer modes.
ini File Parameter
DJBufMinDelay
DJBufOptFactor
AnalogSignalTransportType
Version 5.4
for this parameter is as follows:
[PhoneContext]
FORMAT PhoneContext_Index = PhoneContext_Npi,
PhoneContext_Ton, PhoneContext_Context;
[\PhoneContext]
Where,
Npi = Number Plan.
Ton = Type of Number.
Context = Phone-Context value.
When a call is received from the Tel, the NPI and TON are compared to
the table, and the Phone-Context value is used in the outgoing SIP
INVITE message. The same mapping occurs when an INVITE with a
Phone-Context attribute is received. The Phone-Context parameter
appears in the standard SIP headers where a phone number is used
(Request-URI, To, From, Diversion).
For example:
[PhoneContext]
PhoneContext 0 = 0,0,unknown.com
PhoneContext 1 = 1,1,host.com
PhoneContext 2 = 9,1,na.e164.host.com
[\PhoneContext]
Notes:
This parameter can include up to 20 indices.
Several entries with the same NPI-TON or Phone-Context are
allowed. In this scenario, a Tel-to-IP call uses the first match.
Phone-Context '+' is a unique as it doesn't appear in the Request-
URI as a Phone-Context parameter. Instead, it's added as a prefix to
the phone number. The '+' isn't removed from the phone number in
the IP-to-Tel direction.
To configure the Phone Context table using the Web interface, refer
to ''Mapping NPI/TON to Phone-Context'' on page 151.
For a description on using ini file table parameters, refer to
''Structure of ini File Table Parameters'' on page 229.

Table 4-12: Channel Parameters

For a description of this parameter, refer to ''Configuring the RTP /
RTCP Settings'' on page 74.
For a description of this parameter, refer to ''Configuring the RTP /
RTCP Settings'' on page 74.
For a description of this parameter, refer to Configuring the RTP /
RTCP Settings on page 74.
297
4. ini File Configuration
Description
Description
May 2008