User`s manual

SIP User's Manual 108 Document #: LTRT-83303
Mediant 1000 & Mediant 600
ini File Field Name
Web Parameter Name
Valid Range and Description
1) If the device receives a 180 Ringing response (with or without
SDP) and LocalISDNRBSource = 1, it plays an RBT and sends an
Alert with PI = 8 (unless the parameter ProgressIndicator2ISDN_ID is
configured differently).
2) If LocalISDNRBSource = 0, the device doesn't play an RBT and an
Alert message (without PI) is sent to the ISDN. In this case, the PBX /
PSTN should play the RBT to the originating terminal by itself.
Note: Receipt of a 183 response doesn't cause the device with ISDN
protocol type to play an RBT; the device issues a Progress message
(unless SIP183Behaviour = 1). If SIP183Behaviour = 1, the 183
response is treated the same way as a 180 Ringing response.
 [2] Prefer IP = Play according to 'Early Media' (default). If a 180
response is received and the voice channel is already open (due to a
previous 183 early media response or due to an SDP in the current
180 response), the device with ISDN / CAS protocol type doesn't play
the RBT; PI = 8 is sent in an ISDN Alert message (unless the
parameter ProgressIndicator2ISDN_ID is configured differently).
If a 180 response is received, but the 'early media' voice channel is
not opened, the device with CAS protocol type plays an RBT to the
PSTN. The device with ISDN protocol type operates according to the
parameter LocalISDNRBSource:
1) If LocalISDNRBSource = 1, the device plays an RBT and sends an
ISDN Alert with PI = 8 to the ISDN (unless the parameter
ProgressIndicator2ISDN_ID is configured differently).
2) If LocalISDNRBSource = 0, the device doesn't play an RBT.
No PI is sent in the ISDN Alert message (unless the parameter
ProgressIndicator2ISDN_ID is configured differently). In this case, the
PBX / PSTN should play an RBT tone to the originating terminal by
itself.
Note: Receipt of a 183 response results in an ISDN Progress
message (unless SIP183Behaviour = 1). If SIP183Behaviour = 1 (183
is handled the same way as a 180 + SDP), the device sends an Alert
message with PI = 8, without playing an RBT.
B-Channel Negotiation
[BChannelNegotiationFor
Trunk_ID]
Determines the ISDN B-Channel negotiation mode.
 [-1] Not Configured = use per device configuration of
BChannelNegotiation parameter (default).
 [0] Preferred = Preferred.
 [1] Exclusive = Exclusive.
 [2] Any = Any.
Notes:
 Applicable to ISDN protocols.
 The option ‘Any’ is only applicable if TerminationSide is set to 0 (i.e.,
User side).
 The ID in the ini file parameter name represents the trunk number,
where 0 is the first trunk.