MediaPack SIP User’s Manual 5. Configuring the MediaPack
Version 4.6 53 June 2005
Table 5-1: Protocol Definition, General Parameters (continues on pages 52 to 55)
Parameter Description
Asserted Identity Mode
[AssertedIdMode]
Disable [0] = None (default).
Adding PAsserted Identity [1].
Adding PPreferred Identity [2].
The Asserted ID mode defines the header that is used in the generated INVITE request.
The header also depends on the calling Privacy: allowed or restricted.
The P-asserted (or P-preferred) headers are used to present the originating party’s
Caller ID. The Caller ID is composed of a Calling Number and (optionally) a Calling
Name.
P-asserted (or P-preferred) headers are used together with the Privacy header. If Caller
ID is restricted the ‘Privacy: id’ is included. Otherwise for allowed Caller ID the ‘Privacy:
none’ is used. If Caller ID is restricted (received from Tel or configured in the gateway),
the From header is set to <anonymous@anonymous.invalid>.
Fax Signaling Method
[IsFaxUsed]
Determines the SIP signaling method used to establish and convey a fax session after a
fax is detected.
No Fax [0] = No fax negotiation using SIP signaling (default).
T.38 Relay [1] = Initiates T.38 fax relay.
G.711 Transport [2] = Initiates fax using the coder G.711 A-law/µ-law with
adaptations (refer to note 1).
Fax Fallback [3] = Initiates T.38 fax relay. If the T.38 negotiation fails, the
gateway re-initiates a fax session using the coder G.711 A-law/µ-law with adaptations
(see note 1).
Note 1: Fax adaptations:
Echo Canceller = On
Silence Compression = Off
Echo Canceller Non-Linear Processor Mode = Off
Dynamic Jitter Buffer Minimum Delay = 40
Dynamic Jitter Buffer Optimization Factor = 13
Note 2: If the gateway initiates a fax session using G.711 (option 2 and possibly 3), a
‘gpmd’ attribute is added to the SDP in the following format:
For A-law: ‘a=gpmd:0 vbd=yes;ecan=on’. For µ-law: ‘a=gpmd:8 vbd=yes;ecan=on’.
Note 3: When ‘IsFaxUsed’ is set to 1, 2 or 3 the parameter ‘FaxTransportMode’ is
ignored.
Detect Fax on Answer Tone
[DetFaxOnAnswerTone]
Initiate T.38 on Preamble [0] = Terminating fax gateway initiates T.38 session on
receiving of HDLC preamble signal from fax (default)
Initiate T.38 on CED [1] = Terminating fax gateway initiates T.38 session on
receiving of CED answer tone from fax.
Note: This parameters is applicable only if ‘IsFaxUsed = 1’.
SIP Transport Type
[SIPTransportType]
Determines the default transport layer used for outgoing SIP calls initiated by the
gateway.
UDP [0] (default).
TCP [1].
TLS [2] (SIPS) (MP-11x only).
Note: It is recommended to use TLS to communicate with a SIP Proxy and not for direct
gateway-gateway communication.
SIP UDP Local Port
[LocalSIPPort]
Local UDP port used to receive SIP messages.
The default value is 5060.
SIP TCP Local Port
[TCPLocalSIPPort]
Local TCP port used to receive SIP messages (MP-11x only).
The default value is 5060.
SIP TLS Local Port
[TLSLocalSIPPort]
Local TLS port used to receive SIP messages.
The default value is 5061.
Note: The value of ‘TLSLocalSIPPort’ must be different to the value of
‘TCPLocalSIPPort’.
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