Zhone Technologies 900 - Manual (Page 128)

5-14 IMACS System Release 5.1.6 Data Cards
Model No. Running Head BRI Card User Screens and Settings BRI Card
The Terminal setting allows the port to be set as an lt (line termination) or nt (network
termination), which is the default. Generally, if the BRI is facing a switched line, the card
should be set to nt, via both the user interface and the physical jumpers on the board. Likewise,
if the BRI is facing an NT1, the card should be set to lt, via both the user interface and the
physical jumpers on the board.
For the BRI-ST*8 card:
The Terminal setting allows the port to be set as an nt-pp (network termination
point-to-point), nt-sb (network termination short-bus), nt-eb (network termination
extended-bus) or te (terminal equipment) device. The default for the BRI-ST*8 card is nt-pp.
TYPE
The Type setting determines the type of BRI connection for this port. The options available
are lease (a permanent circuit), BRITE (BRI Terminal Emulation), iw (interworking) and
ntu_l (Network Terminating Unit - Lease). The BRI-2 U*8-SC and BRI-2 U*8 cards support
all four modes (lease, brite, iw and ntu_1).
When Terminal mode lt is selected the options for Type are lease, brite, iw and ntu_1. When
nt is selected the options are lease, brite and iw. When lunt and lult are selected the option is
brite only.
If ntu_l is selected, options available are 2560 (which corresponds to the 2560/2561 NTUs).
If the wrong type of NTU is selected, the user will not be able to perform remote configuration
of the NTU.
B MODE
The B-channel Mode option determines the B-channel usage for this port. Setting the port to
none tells the system that the equipment associated with this port does not require a B-channel
and access to both B WANs is disabled. Setting the highlighted port to B1 tells the system that
only one B-channel is required for the BRI equipment. Selecting B1 enables the B1 WAN and
B1 TS and disables the B2 WAN and B2 TS. Setting the port to B2 tells the system that only
one B-channel is required for the BRI equipment. Selecting B2 enables the B2 WAN and B2
TS and disables the B1 WAN and B1 TS.
Setting the port to B1+B2 tells the system that two B-channels are required for the BRI
equipment. Selecting B1+B2 enables both the B1/B2 WANs and TSs. Any WAN and any time
slot can be assigned to either B-channel.
Setting the port to 128K tells the system that a 128 kbps "pipe" is required for the DTE
equipment. Selecting 128K enables both the B1/B2 WANs and TSs. Both B-channels must be
assigned to the same WAN.