AudioCodes Mediant 500L - Page 1174

User's Manual 1174 Document #: LTRT-10532
Mediant 500L Gateway & E-SBC
Parameter Description
configure voip > interface
e1-t1|bri > pi-to-isdn
[ProgressIndicator2ISDN_x]

[-1] Not Configured = (Default) The PI in ISDN messages is set
according to the parameter PlayRBTone2Tel.
 [0] No PI = PI is not sent to ISDN.
 [1] PI = 1; [8] PI = 8: The PI value is sent to PSTN in
Q.931/Proceeding and Alerting messages. Typically, the
PSTN/PBX cuts through the audio channel without playing local
ringback tone, enabling the originating party to hear remote Call
Progress Tones or network announcements.
Note: The x in the ini file parameter name denotes the trunk number,
where 0 is Trunk 1.
Set PI in Rx Disconnect
Message
configure voip > interface
e1-t1|bri > pi-in-rx-disc-msg
[PIForDisconnectMsg_x]
Defines the device's behavior pe
r trunk when a Disconnect message is
received from the ISDN before a Connect message is received.
 [-1] Not Configured = (Default) Sends a 183 SIP response
according to the received progress indicator (PI) in the ISDN
Disconnect message. If PI = 1 or 8, the device sends a 183
response, enabling the PSTN to play a voice announcement to the
IP side. If there isn't a PI in the Disconnect message, the call is
released.
 [0] No PI = Doesn't send a 183 response to IP. The call is released.
 [1] PI = 1; [8] PI = 8: Sends a 183 response to IP.
Note: The x in the ini file parameter name denotes the trunk number,
where 0 is Trunk 1.
[ConnectOnProgressInd] Enables the play of announcements from IP to Tel without the need to
answer the Tel-to-IP call. It can be used with PSTN networks that don't
support the opening of a TDM channel before an ISDN Connect
message is received.
 [0] = (Default) Connect message isn't sent after SIP 183 Session
Progress message is received.
 [1] = Connect message is sent after SIP 183 Session Progress
message is received.
Local ISDN Ringback Tone
Source
configure voip > interface
e1-t1|bri > local-isdn-rbt-src
[LocalISDNRBSource_x]
Determines whether the ringback tone is played to the ISDN by the
PBX/PSTN or by the device, per trunk.
 [0] PBX = (Default) PBX/PSTN plays the ringback tone.
 [1] Gateway = The device plays the ringback tone.
Note:
 The parameter is used together with the PlayRBTone2Trunk
parameter.
 The x in the ini file parameter name denotes the trunk number,
where 0 is Trunk 1.
PSTN Alert Timeout
configure voip > interface
e1-t1|bri > pstn-alrt-timeout
[TrunkPSTNAlertTimeout_x]
Defines the Alert Timeout (ISDN T301 timer) in seconds for outgoing
calls to PSTN, per trunk. This timer is used between the time that an
ISDN Setup message is sent to the Tel side (IP-to-Tel call
establishment) and a Connect message is received. If Alerting is
received, the timer is restarted.
The range is 1 to 600. The default is 180.
Note: The x in the ini file parameter name denotes the trunk number,
where 0 is Trunk 1.
B-Channel Negotiation
configure voip > interface
e1-t1 > b-channel-nego-for-
Determines the ISDN B-channel negotiation mode, per trunk.
 [-1] Not Configured = (Default) Use per device configuration of the
BChannelNegotiation parameter.