AudioCodes Mediant 3000 User Manual page 789

User's Manual
Parameter
Web/EMS: Min Routing
Overlap Digits
[MinOverlapDigitsForR
outing]
Web/EMS: ISDN Overlap
IP to Tel Dialing
[ISDNTxOverlap]
Web: Enable Receiving
of Overlap Dialing
[ISDNRxOverlap_x]
Version 6.6
IE to the sent ISDN Connect message.

[1] Enable = If the SIP 200 OK includes the Date header, the device
sends its value (i.e. date and time) in the ISDN Connect Date / Time
IE. If the 200 OK does not include this header, the device uses its
internal, local date and time for the Date / Time IE, which it adds to
the sent ISDN Connect message.

[2] Always Send Local Date and Time = The device always sends its
local date and time (obtained from its internal clock) to PBXs in ISDN
Q.931 Connect messages (Date / Time IE). It does this regardless of
whether or not the incoming SIP 200 OK includes the Date header. If
the SIP 200 OK includes the Date header, the device ignores its
value.
Notes:

This feature is applicable only to Tel-to-IP calls.

For IP-to-Tel calls, this parameter is not applicable. Only if the
incoming ISDN Connect message contains the Date / Time IE does
the device add the Date header to the sent SIP 200 OK message.
Defines the minimum number of overlap digits to collect (for ISDN
overlap dialing) before sending the first SIP message for routing Tel-to-
IP calls.
The valid value range is 0 to 49. The default is 1.
Note: This parameter is applicable when the ISDNRxOverlap parameter
is set to [2].
Enables ISDN overlap dialing for IP-to-Tel calls. This feature is part of
ISDN-to-SIP overlap dialing according to RFC 3578.

[0] Disable (default)

[1] Enable
When enabled, for each received INVITE of the same dialog session,
the device sends an ISDN Setup (and subsequent ISDN Info Q.931
messages) with the collected digits to the Tel side. For all subsequent
INVITEs received, the device sends a SIP 484 Address Incomplete
response in order to maintain the current dialog session and receive
additional digits from subsequent INVITEs.
Note: When IP-to-Tel overlap dialing is enabled, to send ISDN Setup
messages without the Sending Complete IE, the ISDNOutCallsBehavior
parameter must be set to USER SENDING COMPLETE (2).
Determines the receiving (Rx) type of ISDN overlap dialing for Tel-to-IP
calls, per trunk.

[0] None = (Default) Disabled.

[1] Local receiving = ISDN Overlap Dialing - the complete number is
sent in the INVITE Request-URI user part. The device receives ISDN
called number that is sent in the 'Overlap' mode. The ISDN Setup
message is sent to IP only after the number (including the Sending
Complete IE) is fully received (via Setup and/or subsequent Info
Q.931 messages). In other words, the device waits until it has
received all the ISDN signaling messages containing parts of the
called number, and only then it sends a SIP INVITE with the entire
called number in the Request-URI.

[2] Through SIP = Interworking of ISDN Overlap Dialing to SIP,
based on RFC 3578. The device interworks ISDN to SIP by sending
digits each time they are received (from Setup and subsequent Info
789
53. Configuration Parameters Reference
Description
Mediant 3000