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COMSPHERE 3550 Series Data Service Units
Index-6 February 1995 3550-A2-GB20-10
L
LADS, 1-1
connection, distances, table, 2-8
network, connection, 2-7, 3-9
operation, 1-1
LADS network connection, figure, 2-7
Lamp, 4-12
DBM test, C-3
message, C-3
DSU test, C-4
message, C-4
Test, 2-12, 3-12
LCD, 1-2
power–up, 2-5, 3-8
LDM, (see LADS), 1-1
leads
external, 4-19
changing, 4-19
displaying, 4-19
reporting external changes to NMS, 4-20
states, 4-20
LED, light-emitting diode, 1-2
LEDs, 4-19
line
communication
DSU, 1-6
V.32 DBM, 1-7
speeds, 1-3
Link Delay, 5-11
link-level network addressing, 3-10
LinkConfig, 5-10
LL, 4-9
LL by DTE, 5-19
local loopback, 4-9
loopback, 4-9
bilateral, 2-12, 3-12, 4-10
digital, 2-12, 3-12, 4-10
DTE, 2-12, 3-12, 4-10
local, 2-12, 3-12, 4-9
remote digital, 2-12, 3-12, 4-10
loopbacks, 4-9
Lpbk, 4-9
LSD, status indicator, C-2
LSD Lead, 5-18
M
management control, 1-2
manual backup, 4-8
Max, C-6
Menu, 4-12
mode, 4-12, 5-5
subbranch, 5-5
menu
selections, backup branch, 4-8
structure, 4-4
tree, A-1
Menu Mode
disabled, B-4
enabled, B-2
messages
branch, 4-20
control panel, C-1, C-3
device health and status, C-3
error, C-9
TDM/Flex, C-11
expanded health and status, C-6
format, C-3
health and status, C-3
progress, C-8
command, C-8
dial backup, C-8
subnetwork health and status, C-7
mode
DBM, C-3
Dial Backup, 4-7
External Backup, 4-7
Idle, 4-7
Menu, 5-5
Standby, 4-7
Model 3550
DDS (LADS) network connection, figure, 2-7
dial (PSTN) network connection, 2-6
dial network pin assignments, D-2
digital network pin assignments, D-2
NMS connection, figure, 2-6
Model 3551
installation, and circuit pack lock, 3-6
jumper straps, 3-4
rear connector plate, D-4
switch and jumper locations, 3-3
modulation, 1-7
MPTC, 4-13
M-PtSymPrt, 5-11
MPTT, 4-13
Msg Clamp, 5-6
Msgs, 4-20
MultiCall, 4-7, 5-22
multiplexing, 1-3
multipoint rate adaption, 5-11
multispeed operation, 1-1
MUX
(Port) configuration options, 5-23
(Setup) configuration options, 5-23
CommunicFail message, C-5
Device Fail message, C-5
Device Failure, C-7
Failure alarm, C-2
message, C-7
MUX Funct, 5-23