User's Manual 638 Document #: LTRT-68822
Mediant 2000
Parameter Description
Web/EMS: Enable QSIG
Tunneling
[EnableQSIGTunneling]
Enables QSIG tunneling-over-SIP for all calls. This is according to IETF
Internet-Draft draft-elwell-sipping-qsig-tunnel-03 and ECMA-355 and
ETSI TS 102 345.
 [0] Disable (default).
 [1] Enable = Enable QSIG tunneling from QSIG to SIP and vice
versa. All QSIG messages are sent as raw data in corresponding
SIP messages using a dedicated message body.
Notes:
 This feature can also be configured in an IP Profile.
 QSIG tunneling must be enabled on originating and terminating
devices.
 To enable this function, set the ISDNDuplicateQ931BuffMode
parameter to 128 (i.e., duplicate all messages).
 To define the format of encapsulated QSIG messages, use the
QSIGTunnelingMode parameter.
 Tunneling according to ECMA-355 is applicable to all ISDN variants
(in addition to the QSIG protocol).
 For more information on QSIG tunneling, see 'QSIG Tunneling' on
page 271.
[QSIGTunnelingMode]
Defines the format of encapsulated QSIG message data in the SIP
message MIME body.
 [0] = (Default) ASCII presentation of Q.931 QSIG message.
 [1] = Binary encoding of Q.931 QSIG message (according to ECMA-
355, RFC 3204, and RFC 2025).
Note: This parameter is applicable only if the QSIG Tunneling feature is
enabled (using the EnableQSIGTunneling parameter).
Web: Enable Hold to
ISDN
EMS: Enable Hold 2
ISDN
[EnableHold2ISDN]
Enables SIP-to-ISDN interworking of the Hold/Retrieve supplementary
service.
 [0] Disable (default)
 [1] Enable
Notes:
 This parameter is applicable to Euro ISDN variants - from TE (user)
to NT (network).
 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
[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
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