AudioCodes E-SBC User Manual

CHAPTER68 Configuration Parameters Reference
Mediant 1000 Gateway & E-SBC | User's Manual
Parameter Description
[IgnoreISDNSubaddress] ■ [0] = (Default) If an incoming ISDN Q.931 Setup message
contains a Called/Calling Number Subaddress, the
Subaddress is interworked to the SIP 'isub' parameter
according to RFC.
■ [1] = The device removes the ISDN Subaddress and does
not include the 'isub' parameter in the Request-URI and
does not process INVITEs with the parameter.
[ISUBNumberOfDigits] Defines the number of digits (from the end) that the device takes
from the called number (received from the IP) for the isub
number (in the sent ISDN Setup message). This feature is
applicable only for IP-to-ISDN calls.
The valid value range is 0 to 36. The default is 0.
This feature operates as follows:
1. If an isub parameter is received in the Request-URI, for
example,
INVITE sip:9565645;isub=1234@host.domain:user=phone
SIP/2.0
then the isub value is sent in the ISDN Setup message as
the destination subaddress.
2. If the isub parameter is not received in the user part of the
Request-URI, the device searches for it in the URI para-
meters of the To header, for example,
To: "Alex" <sip: 9565645@host.domain;isub=1234>
If present, the isub value is sent in the ISDN Setup message
as the destination subaddress.
3. If the isub parameter is not present in the Request-URI
header nor To header, the device does the following:
✔ If the called number (that appears in the user part of the
Request-URI) starts with zero (0), for example,
INVITE sip:05694564@host.domain:user=phone
SIP/2.0
then the device maps this called number to the
destination number of the ISDN Setup message, and
the destination subaddress in this ISDN Setup
message remains empty.
✔ If the called number (that appears in the user part of the
Request-URI) does not start with zero, for example,
INVITE sip:5694564@host.domain:user=phone
SIP/2.0
then the device maps this called number to the
destination number of the ISDN Setup message, and
the destination subaddress in this ISDN Setup
message then contains y digits from the end of the
called number. The y number of digits can be configured
using the ISUBNumberOfDigits parameter. The default
value of ISUBNumberOfDigits is 0, thus, if the
parameter is not configured, and 1) and 2) scenarios
(described above) have not provided an isub value, the
subaddress remains empty.
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AudioCodes E-SBC Specifications

General

Brand	AudioCodes
Model	E-SBC
Category	Gateway
Language	English