AudioCodes MediaPack MP-11X User Manual page 73

SIP User's Manual
Parameter
Fax Signaling Method
[IsFaxUsed]
Detect Fax on Answer
Tone
[DetFaxOnAnswerTone]
SIP Transport Type
[SIPTransportType]
SIP UDP Local Port
[LocalSIPPort]
Version 5.2
Table 5-8: General Parameters (Protocol Definition)
Determines the SIP signaling method used to establish and convey a fax
session after a fax is detected.
[0] No Fax = No fax negotiation using SIP signaling. Fax transport
method is according to the parameter FaxTransportMode (default).
[1] T.38 Relay = Initiates T.38 fax relay.
[2] G.711 Transport = Initiates fax / modem using the coder G.711 A-
law/µ-law with adaptations (refer to Note below).
[3] Fax Fallback = 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 (refer to Note below).
Notes:
Fax adaptations (for options 2 and 3):
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
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'.
When IsFaxUsed is set to 1, 2, or 3 the parameter FaxTransportMode
is ignored.
When the value of IsFaxUsed is other than 1, T.38 might still be used
without the control protocol's involvement. To completely disable T.38,
set FaxTransportMode to a value other than 1.
For detailed information on fax transport methods, refer to 'Fax/Modem
Transport Modes' on page 325.
[0] Initiate T.38 on Preamble = Terminating fax gateway initiates T.38
session on receiving HDLC preamble signal from fax (default)
[1] Initiate T.38 on CED = Terminating fax gateway initiates T.38
session on receiving CED answer tone from fax.
Note: This parameters is applicable only if IsFaxUsed = 1.
Determines the default transport layer used for outgoing SIP calls initiated
by the gateway.
Valid options include:
[0] UDP (default)
[1] TCP
[2] TLS (SIPS)
Note: It's recommended to use TLS to communicate with a SIP Proxy and
not for direct gateway-gateway communication.
Local UDP port used to receive SIP messages.
The valid range is 1 to 65534. The default value is 5060.
Description
73
5. Web-based Management
August 2007