Interworking Isdn Overlap Dialing With Sip According To Rfc 3578; Redirect Number And Calling Name (Display) - AudioCodes Mediant 1000B User Manual

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 857):

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 333.
21.8

Redirect Number and Calling Name (Display)

The following tables define the device's redirect number and calling name (Display) support
for various ISDN variants according to NT (Network Termination) / TE (Termination
Equipment) interface direction:
NT/TE Interface DMS-100
NT-to-TE
TE-to-NT
NT/TE Interface
NT-to-TE
TE-to-NT
* When using ETSI DivertingLegInformation2 in a Facility IE (not Redirecting Number IE).
User's Manual
Table 21-2: Calling Name (Display)
NI-2
Yes Yes
Yes Yes
Table 21-3: Redirect Number
DMS-100 NI-2
Yes Yes
Yes Yes
Mediant 1000B Gateway & SBC
4/5ESS
Yes
Yes
4/5ESS
Yes
Yes
350
Euro ISDN QSIG
Yes Yes
No Yes
Euro ISDN QSIG
Yes Yes
Yes* Yes
Document #: LTRT-27034