AudioCodes Mediant 2000 User Manual page 545

SIP User's Manual
Parameter
[ISDNRxOverlap]
Web/EMS: Mute DTMF In Overlap
[MuteDTMFInOverlap]
[ConnectedNumberType]
Version 6.4
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 Q.931 messages) to the IP,
using subsequent SIP INVITE messages.
Notes:

When option [2] is configured, you can define the minimum
number of overlap digits to collect before sending the first
SIP message for routing the call, using the
MinOverlapDigitsForRouting parameter.

When option [2] is configured, even if SIP 4xx responses
are received during this ISDN overlap receiving, the device
does not release the call.

The MaxDigits parameter can be used to limit the length of
the collected number for ISDN overlap dialing (if Sending
Complete is not received).

If a digit map pattern is defined (using the DigitMapping or
DialPlanIndex parameters), the device 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 is not
received.

For enabling ISDN overlap dialing for IP-to-Tel calls, use the
ISDNTxOverlap parameter.

For more information on ISDN overlap dialing, see ''ISDN
Overlap Dialing'' on page 231.
Same as the description for parameter ISDNRxOverlap_x, but
for all trunks.
Enables the muting of in-band DTMF detection until the device
receives the complete destination number from the ISDN (for
Tel-to-IP calls). In other words, the device does not accept
DTMF digits received in the voice stream from the PSTN, but
only accepts digits from ISDN Info messages.

[0] Don't Mute (default)

[1] Mute DTMF in Overlap Dialing = The device ignores in-
band DTMF digits received during ISDN overlap dialing
(disables the DTMF in-band detector).
Note: This parameter is applicable to ISDN Overlap mode only
when dialed numbers are sent using Q.931 Information
messages.
Defines the Numbering Type of the ISDN Q.931 Connected
Number IE that the device sends in the Connect message to
545
A. Configuration Parameters Reference
Description
November 2011