Version 7.2 1173 Mediant 1000B Gateway & E-SBC
User's Manual 65. Configuration Parameters Reference
Parameter Description
dialing > min-dg-b4-routing
[MinOverlapDigitsForRouting]
The valid value range is 0 to 49. The default is 1.
Note: The parameter is applicable when the ISDNRxOverlap
parameter is set to [2] or [3].
ISDN Overlap IP to Tel
Dialing
configure voip > gateway
dtmf-supp-service dtmf-and-
dialing > isdn-tx-overlap
[ISDNTxOverlap]
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] Through SIP = The device sends the first received digits from
the initial INVITE to the Tel side in an ISDN Setup message. For
each subsequently received re-INVITE message of the same
dialog session, the device sends the collected digits to the Tel
side in ISDN Info Q.931 messages. For each received re-INVITE,
the device sends a SIP 484 Address Incomplete response to
maintain the current dialog session and to receive additional digits
from subsequent re-INVITEs.
[2] Through SIP INFO = The device sends the first received digits
from the initial INVITE to the Tel side in an ISDN Setup message
and then responds to the IP side with a SIP 183. For each
subsequently received SIP INFO message with additional digits of
the same dialog session, the device sends the collected digits to
the Tel side in ISDN Info Q.931 messages. For each received SIP
INFO, the device sends a SIP 200 OK response to maintain the
current dialog session and to receive additional digits from
subsequent INFOs.
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).
Select type of Overlap
Receiving
configure voip > interface e1-
t1|bri > ovrlp-rcving-type
[ISDNRxOverlap_x]
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
according to RFC 3578. The device sends the first received digits
from the ISDN Setup message to the IP side in the initial INVITE
message. For each subsequently received ISDN Info Q.931
message, the device sends the collected digits to the IP side in re-
INVITE messages.
[3] Through SIP INFO =Interworking of ISDN Overlap Dialing to
SIP according to RFC 3578. The device sends the first received
digits from the ISDN Setup message to the IP side in the initial
INVITE message. For each subsequently received ISDN Info
Q.931 message, the device sends the collected digits to the IP
side in INFO messages.
Note:
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