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Appendix D. Specifications
D-2 TDU 120e User Manual 61202156L2-1
Compatibility
T1 Interface
Pub 62411
ESF Format Interface
TR. 194
ESF Performance Monitoring
TR. 54016 and T1.403
Approvals
FCC Part 15, FCC Part 68, UL 1950
Nx/DBU Interface - Port 0.1-Nx56/64 (V.35 Interface)
DCE Interface
CCITT V.35 Synchronous
Rates
56kbps - 1.536Mbps in 56k or 64k increments
Clock Options
Normal/Inverted and internal/external
Tests
Local Loopback (bilateral); Remote Loopback (V.54)
Test Pattern
511 with errored seconds display and error inject capabil-
ity
Data inversion
Menu selectable
1s Density Protection
Force 1s to network after one second of consecutive zeros
from DTE. User selectable (On/Off)
CTS, DCD, DSR
Normal or Force On