AudioCodes Mediant 800B - Page 477

Version 7.2 477 Mediant 800B Gateway & E-SBC
User's Manual 20. Coders and Profiles
Tel Profile Parameter Global Parameter
various kinds of communications is strictly defined, allowing
higher precedence communication at the expense of lower
precedence communications. Higher priority calls override
less priority calls when, for example, congestion occurs in a
network.
 [2] Emergency = Enables Preemption of IP-to-Tel E911
emergency calls. If the device receives an E911 call and
there are unavailable channels to receive the call, the device
terminates one of the channel calls and sends the E911 call
to that channel. The preemption is done only on a channel
belonging to the same Trunk Group for which the E911 call
was initially destined and if the channel select mode
(configured by the ChannelSelectMode parameter) is set to
other than By Dest Phone Number (0). The preemption is
done only if the incoming IP-to-Tel call is identified as an
emergency call. The device identifies emergency calls by
one of the following:

The destination number of the IP call matches one of
the numbers configured by the EmergencyNumbers
parameter. (For E911, you must configure the
parameter to "911".)

The incoming SIP INVITE message contains the
“emergency” value in the Priority header.
Note:
 The parameter is applicable to FXS/FXO, ISDN and CAS.
 For FXO interfaces, the preemption is done only on existing
IP-to-Tel calls. In other words, if all the current FXO
channels are busy with calls that were initiated by the FXO
(i.e., Tel-to-IP calls), new incoming emergency IP-to-Tel
calls are rejected.
 For more information, see 'Pre-empting Existing Call for
E911 IP-to-Tel Call' on page 613.
 The corresponding global parameter is CallPriorityMode.
Behavior
Disconnect Call on Detection of Busy Tone
disconnect-on-busy-tone
[TelProfile_DisconnectOnBusyTone]
Enables the device to disconnect the call upon detection of a
busy or reorder (fast busy) tone.
 [0] Disable
 [1] Enable (Default)
Note:
 The parameter is applicable only to FXO and CAS.
 The corresponding global parameter is
DisconnectOnBusyTone.
Time For Reorder Tone
time-for-reorder-tone
[TelProfile_TimeForReorderTone]
Defines the duration (in seconds) that the device plays a busy
or reorder tone before releasing the line.
Analog interfaces: Typically, after playing the busy or reorder
tone for this duration, the device starts playing an offhook
warning tone.
The valid range is 0 to 254. The default is 0 seconds for analog
interfaces and 10 seconds for digital interfaces. Note that the
Web interface denotes the default value (for analog and digital
interfaces) as a string value of "255".