AudioCodes Mediant 1000 User Manual page 75

SIP User's Manual
Parameter
Asserted Identity Mode
[AssertedIdMode]
Fax Signaling Method
[IsFaxUsed]
Version 5.2
Table 5-8: General Parameters (Protocol Definition)
[0] Disabled = None (default)
[1] Adding PAsserted Identity
[2] Adding PPreferred Identity
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>.
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 381.
Description
75
5. Web-based Management
September 2007