AudioCodes Mediant 800B - Page 463

Version 7.2 463 Mediant 800B Gateway & E-SBC
User's Manual 20. Coders and Profiles
Parameter Description
sbc-rmt-renegotiate-on-fax-
detect
[IPProfile_SBCRemoteRene
gotiateOnFaxDetection]
(i.e., after 200 OK).
The device attempts to detect the fax (CNG tone) from the originating
SIP entity within a user-defined interval (see the
SBCFaxDetectionTimeout parameter) immediately after the voice call
is established.
Once fax is detected, the device can handle the subsequent fax
negotiation by sending re-INVITE messages to both SIP entities. The
device also negotiates the fax coders between the two SIP entities.
The negotiated coders are according to the list of fax coders assigned
to each SIP entity, using the IP Profile parameter 'Fax Coders Group'.
 [0] Transparent = (Default) Device does not interfere in the fax
transaction and assumes that the SIP entity fully supports fax
renegotiation upon fax detection.
 [1] Only on Answer Side = The SIP entity supports fax
renegotiation upon fax detection only if it is the terminating
(answering) fax, and does not support renegotiation if it is the
originating fax.
 [2] No = The SIP entity does not support fax re-negotiation upon
fax detection when it is the originating or terminating fax.
Note:
 This feature is applicable only when both SIP entities do not fully
support fax detection (receive or send) and negotiation: one SIP
entity must be assigned an IP Profile where the parameter is set to
[1] or [2], while the peer SIP entity must be assigned an IP Profile
where the parameter is set to [2].
 This feature is supported only if at least one of the SIP entities use
the G.711 coder.
 This feature utilizes DSP resources. If there are insufficient
resources, the fax transaction fails.
Fax Rerouting Mode
sbc-fax-rerouting-
mode
[IpProfile_SBCFaxRerouting
Mode]
Enables the rerouting of incoming SBC calls that are identified as fax
calls to a new IP destination.
 [0] Disable (default)
 [1] Rerouting without delay
For more information, see Configuring Rerouting of Calls to Fax
Destinations on page 722.
Note: Configure the parameter for the IP leg that is interfacing with the
fax termination.
Media
Broken Connection Mode
disconnect-on-broken-
connection
[IpProfile_DisconnectOnBrok
enConnection]
Defines the device's handling of calls when RTP packets (media) are
not received within a user-defined timeout interval (configured by the
BrokenConnectionEventTimeout parameter). The interval can be
during call setup (configured by the NoRTPDetectionTimeout
parameter) or mid-call when RTP flow suddenly stops (configured by
the BrokenConnectionEventTimeout parameter).
 [0] Ignore = The call is maintained despite no media and is
released when signaling ends the call (i.e., SIP BYE).
 [1] Disconnect = (Default) The device ends the call.
 [2] Reroute = (SBC application only) The device ends the call and
searches the IP-to-IP Routing table for a matching rule and if
found, generates a new INVITE to the corresponding destination