Subn, 4-4,4-5,4-9subnetwork, 4-5
health and status, 4-5messages, C-7
Subnetwork Alarm, C-2SubnetwrkAlarm message, C-5Sub-normal Speed message, C-5SubSpd message, C-7
Subtree Truncat message, C-5support, equipment, 1-8 switch
jumper locations, Model 3551, 3-3location, figure, 2-3
settings, Model 3550, 2-3,3-3switched
carrier emulation, 1-3network interface, 1-7
Sync >Async Req error message, C-13Sync Port Requir error message, C-13SystemStat, 5-18
T
TDM/Flex, 1-2,1-3technical specifications, 1-8
technical specifications, 1-3DSU, 1-6
general, 1-4TDM/Flex, 1-8
V.32 DBM, 1-7
telephone number, entering, 4-17temperature
operating, 1-4storage, 1-4
terminal power, 4-5
Test, status indicator, C-2SDCP, C-2
test
bilateral loopback, 2-12,3-12bit error rate, 2-12,3-12,4-11
results, 4-12branch, 4-9
device, 2-12,3-12,4-9digital, 2-12,3-12,4-10digital loopback, 2-12,3-12DTE loopback, 2-12,3-12end-to-end, 2-12,3-12end-to-end, 4-11
results, 4-11lamp, 2-12,3-12,4-12local loopback, 2-12,3-12mode
DBM test message, C-3DSU test message, C-4port test message, C-5
remote digital loopback, 2-12,3-12Test message, C-7
Thresh message, C-7
Time Division Multiplexer, 1-2
TM
DBM test, C-3DSU test, C-4port test, C-5
Too Many Ports error message, C-13top-level menu, 3-11
TPwr, 4-5
Training failure message, C-6transmit VF interface, 1-7transmitter control, 4-19TribTimOut, 5-11
TribTm message, C-7tributary diagnostics, 1-2Tries Timer message, C-6TriesTimeOut, 4-7,5-22Trunc message, C-7TxCarrSel, 5-25TxClkSource, 5-6,5-12,5-16TxCtl, 4-19
TXD, status indicator, C-2TxElasStor, 5-6,5-13TxPwd, 5-14
U
UL, 1-4
Undersp Required error message, C-13Underspeed, 5-27,5-28,5-29upgrades, 1-3
V
V.13 Signl, 5-15
V.32 DBM, 1-2
technical specifications, 1-7V.35
connector, pin assignments, D-7crossover cable, figure, D-9interconnect cable, 3-7
figure, D-6
V.54 Lpbk, 5-7
verification, operation, 2-11,3-10vibration, 1-4
W
Wait Callback DBM message, C-8WaitForAnswr DBM message, C-8warning, notices, C
warranty, 1-8
worksheets, configuration, B-1
