AudioCodes Mediant 3000 User Manual page 701

SIP User's Manual
Parameter
[IgnoreISDNSubaddress]
[ISUBNumberOfDigits]
Version 6.4
same phone number (ISDN Calling and Called numbers) for
interworking between ISDN and SIP networks.

[0] = ASCII - IA5 format that allows up to 20 digits. Indicates
that the 'isub' parameter value needs to be encoded using
ASCII characters (default)

[1] = BCD (Binary Coded Decimal) - allows up to 40
characters (digits and letters). Indicates that the 'isub'
parameter value needs to be encoded using BCD when
translated to an ISDN message.

[2] = User Specified
For IP-to-Tel calls, if the incoming SIP INVITE message
includes subaddress values in the 'isub' parameter for the
Called Number (in the Request-URI) and/or the Calling Number
(in the From header), these values are mapped to the outgoing
ISDN Setup message.
If the incoming ISDN Setup message includes 'subaddress'
values for the Called Number and/or the Calling Number, these
values are mapped to the outgoing SIP INVITE message's
'isub' parameter in accordance with RFC 4715.
Determines whether the device ignores the Subaddress from
the incoming ISDN Called and Calling numbers when sending
to IP.

[0] = 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
(default).

[1] = The device removes the ISDN Subaddress and does
not include the 'isub' parameter in the Request-URI and
does not process INVITEs with this parameter.
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 only
applicable for IP-to-ISDN calls.
The valid value range is 0 to 36. The default value is 0.
This feature operates as follows:
If an isub parameter is received in the Request-URI, for
1
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.
If the isub parameter is not received in the user part of the
2
Request-URI, the device searches for it in the URI
parameters 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.
If the isub parameter is not present in the Request-URI
3
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
701
32. Viewing Syslog Messages
Description
November 2011