AudioCodes Mediant 3000 User Manual page 797

User's Manual
Parameter
Web: TDM Over IP
Minimum Calls For Trunk
Activation
EMS: TDM Over IP Min
Calls For Trunk Activation
[TDMOverIPMinCallsForTr
unkActivation]
[TDMoIPInitiateInviteTime]
[TDMoIPInviteRetryTime]
Web: Fax Signaling Method
EMS: Fax Used
[IsFaxUsed]
[HandleG711asVBD]
[FaxVBDBehavior]
Version 6.8
Group Settings table.
Defines the minimal number of SIP dialogs that must be established
when using TDM Tunneling to consider the specific trunk as active.
When using TDM Tunneling, if calls from this defined number of B-
channels pertaining to a specific Trunk fail (i.e., SIP dialogs are not
correctly set up), an AIS alarm is sent on this trunk toward the PSTN
and all current calls are dropped. The originator gateway continues the
INVITE attempts. When this number of calls succeed (i.e., SIP dialogs
are correctly set up), the AIS alarm is cleared.
The valid range is 0 to 31. The default is 0 (i.e., don't send AIS
alarms).
Defines the time (in msec) between the first INVITE issued within the
same trunk when implementing the TDM tunneling application.
The valid value range is 2000 to 4000. The default is 2000.
Defines the time (in msec) between call release and a new INVITE
when implementing the TDM tunneling application.
The valid value range is 30,000 to 60,000. The default is 30,000.
Global parameter that defines the SIP signaling method for
establishing and transmitting a fax session when the device detects a
fax. You can also configure this functionality per specific calls, using IP
Profiles (IpProfile_IsFaxUsed). For a detailed description of this
parameter and for configuring this functionality in the IP Profile table,
see ''Configuring IP Profiles'' on page 329.
Note: If this functionality is configured for a specific IP Profile, the
settings of this global parameter is ignored for calls associated with the
IP Profile.
Enables the handling of G.711 as a G.711 Voice Band Data (VBD)
coder.

[0] = (Default) Disable. The device negotiates G.711 as a regular
audio coder and sends an answer only with G.729 coder. For
example, if the device is configured with G.729 and G.711 VBD
coders and it receives an INVITE with an SDP offer containing
G.729 and "regular" G.711 coders, it sends an SDP answer
containing only the G.729 coder.

[1] = Enable. The device assumes that the G.711 coder received in
the INVITE SDP offer is a VBD coder. For example, if the device is
configured with G.729 and G.711 VBD coders and it receives an
INVITE with an SDP offer containing G.729 and "regular" G.711
coders, it sends an SDP answer containing G.729 and G.711 VBD
coders, allowing a subsequent bypass (passthrough) session if
fax/modem signals are detected during the call.
Note: This parameter is applicable only if G.711 VBD coder(s) with
regular G.711 payload types 0 or 8 are configured for the device (using
the CodersGroup parameter).
Determines the device's fax transport behavior when G.711 VBD coder
is negotiated at call start.

[0] = (Default) If the device is configured with a VBD coder (see the
CodersGroup parameter) and is negotiated OK at call start, then
both fax and modem signals are sent over RTP using the bypass
payload type (and no mid-call VBD or T.38 Re-INVITEs occur).

[1] = If the IsFaxUsed parameter is set to 1, the channel opens with
797
51. Configuration Parameters Reference
Description
Mediant 3000