Interworking Isdn Overlap Dialing With Sip According To Rfc 3578 - AudioCodes Mediant 600 User Manual

User's Manual
parameter).

The maximum number of received digits has been reached (configured by the
MaxDigits parameter).

A match is found with the defined digit map (configured by the DigitMapping
parameter).
Relevant parameters (described in 'PSTN Parameters' on page 747):

ISDNRxOverlap_x = 1 (can be configured per trunk)

TimeBetweenDigits

MaxDigits

MuteDTMFInOverlap

DigitMapping
For configuring ISDN overlap dialing using the Web interface, see 'Configuring Trunk
Settings' on page 273.
21.7.2 Interworking ISDN Overlap Dialing with SIP According to RFC
3578
The device supports the interworking of ISDN overlap dialing to SIP and vice versa,
according to RFC 3578.

Interworking ISDN overlap dialing to SIP (Tel to IP): The device sends collected
digits each time it receives them (initially from the ISDN Setup message and then from
subsequent Q.931 Information messages) to the IP side, using subsequent SIP
INVITE messages. You can also define the minimum number of overlap digits to
collect before sending the first SIP message (INVITE) for routing the call, using the
MinOverlapDigitsForRouting parameter.

Interworking SIP to ISDN overlap dialing (IP to Tel): For each received SIP INVITE
pertaining to the same dialog session, the device sends an ISDN Setup message (and
subsequent Q.931 Information messages) with the collected digits to the Tel side. For
all subsequent INVITEs received, the device sends a SIP 484 "Address Incomplete"
response to the IP in order to maintain the current dialog session and to receive
additional digits from subsequent INVITEs.
Relevant parameters (described in 'PSTN Parameters' on page 747):

ISDNRxOverlap = 2

ISDNTxOverlap

ISDNOutCallsBehavior = 2

MinOverlapDigitsForRouting

TimeBetweenDigits

MaxDigits

DigitMapping

MuteDTMFInOverlap
For configuring ISDN overlap dialing using the Web interface, see 'Configuring Trunk
Settings' on page 273.
Version 6.6 289
21. Digital PSTN
Mediant 600 & Mediant 1000