Version 5.2 185 September 2007
SIP User's Manual 5. Web-based Management
Table 5-37: E1/T1/J1 Configuration Parameters
ini File Field Name
Web Parameter Name
Valid Range and Description
Enable Receiving of
Overlap Dialing
[ISDNRxOverlap_x]
Enable / disable Rx ISDN overlap per trunk ID.
 [0] Disable = Disabled (default).
 [1] Enable = Enabled.
Notes:
 If enabled, the gateway receives ISDN called number that is sent in
the 'Overlap' mode.
 The SETUP message to IP is sent only after the number (including
the 'Sending Complete' Info Element) was fully received (via SETUP
and/or subsequent INFO Q.931 messages).
 The 'MaxDigits' parameter can be used to limit the length of the
collected number for gateway ISDN overlap dialing (if sending
complete is not received).
 If a digit map pattern is defined (DigitMapping), the gateway collects
digits until a match is found (e.g., for closed numbering schemes) or
until a timer expires (e.g., for open numbering schemes). If a match is
found (or the timer expires), the digit collection process is terminated
even if Sending Complete wasn't received.
Local ISDN Ringback Tone
Source
[LocalISDNRBSource_ID]
Determines whether Ringback tone is played to the ISDN by the PBX /
PSTN or by the gateway, where ID is the Trunk number (0-0-7).
 [0] PBX = PBX / PSTN (default).
 [1] Gateway.
This parameter is applicable to ISDN protocols. It is used simultaneously
with the parameter 'PlayRBTone2Trunk'.
Progress Indicator to ISDN
[ProgressIndicator2ISDN
_ID]
Progress indicator (PI) to ISDN, where ID is the Trunk number (0-7).
 [-1] Not Configured = The PI in ISDN messages is set according to
the 'Play Ringback to Tel' parameter (default).
 [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.
Set PI in Rx Disconnect
Message
[PIForDisconnectMsg_ID]
Defines the gateway's behavior when a Disconnect message is received
from the ISDN before a Connect message is received. Where ID is the
Trunk number (0-7).
 [-1] Not Configured = Sends a 183 message according to the
received progress indicator (PI) in the ISDN Disconnect message. If
PI = 1 or 8, the gateway 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 (default).
 [0] No PI = Don't send a 183 message to IP. The call is released.
 [1] PI = 1; [8] PI = 8: Sends a 183 message to IP.
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