AudioCodes Media 800 MSBR - Page 914

User's Manual 914 Document #: LTRT-12809
Mediant 800 MSBR
Parameter Description

This parameter is applicable also to QSIG BRI.
 If the parameter is disabled, the device plays a held tone to the Tel
side when a SIP request with 0.0.0.0 or "inactive" in SDP is received.
An appropriate CPT file with the held tone should be used.
EMS: Duplicate Q931
Buff Mode
[ISDNDuplicateQ931Bu
ffMode]
Determines the activation/deactivation of delivering raw Q.931
messages.
 [0] = (Default) ISDN messages aren't duplicated.
 [128] = All ISDN messages are duplicated.
Note: For this parameter to take effect, a device reset is required.
Web/EMS: ISDN
SubAddress Format
CLI: isdn-subaddr-frmt
[ISDNSubAddressForm
at]
Determines the encoding format of the SIP Tel URI parameter 'isub',
which carries the encoding type of ISDN subaddresses. This is used to
identify different remote ISDN entities under the same phone number
(ISDN Calling and Called numbers) for interworking between ISDN and
SIP networks.
 [0] = (Default) ASCII - IA5 format that allows up to 20 digits.
Indicates that the 'isub' parameter value needs to be encoded using
ASCII characters.
 [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.
[IgnoreISDNSubaddres
s]
Determines whether the device ignores the Subaddress from the
incoming ISDN Called and Calling numbers when sending to IP.
 [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 this 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 only applicable 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 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