Up to 84 T1 (or 3 T3) or 63 E1 (or 3 E3) ports
Up to 1022 n x DS-0 channels (where n is 1 to 24) with no T3 ports configured
Up to 400 n x DS-0 channels (where n is 1 to 24) with one or more T3 ports configured
Support for Channelized OC-3 to T1, Channelized STM-1 to E1, clear channel T3/E3, subrate T3/E3, full-rate T1, clear channel E1, and Channelized T1/E1
SONET multiplexing:
· OC-3 <-> STS-3 <-> STS-1 <-> VTG <-> VT1.5 <-> T1 <-> N x DS-0
· OC-3 <-> STS-3 <-> STS-1 <-> T3 <-> T1 <-> N x DS-0
· OC-3 <-> STS-3 <-> STS-1 <-> T3
· OC-3 <-> STS-3 <-> STS-1 <-> T3 <-> E1 <-> n x DS-0
SDH multiplexing:
· STM-1 <-> AUG <-> AU-4 <-> VC-4 <-> TUG-3 <-> TUG-2 <-> TU-12 <-> VC-12 <-> E1 <-> n x DS-0
· STM-1 <-> AUG <-> AU-4 <-> VC-4 <-> TUG-3 <-> TU-3 <-> VC-3 <-> T3/E3
· Internal or line-derived (loop) clocking, independently selectable on each T1 or E1 tributary
Loopback capabilities:
· Local and remote loopback at the T3/T1 level
· Network loopback at the STM-1/OC-3, T3/E3, and T1/E1 levels
· Response to embedded loopback commands
· Insertion of loopback commands into transmitted signal
· Bit error rate testing (BERT) pattern generation and detection per channel
· Programmable pseudorandom pattern up to 32 bits in length
· T3/E3: All 0s, all 1s, 215, 220, 220 QRSS, 223, alternating 0s and 1s, 1-in-8, and 3-in-24
· T1/E1: All 0s, all 1s, 211, 215, 220, 220 QRSS, 223, alternating 0s and 1s, 1-in-8, and 3-in-24
· 32-bit error-count and bit-count registers
· Detection of test patterns with bit error rates up to 10-2
· 24-hour history maintained for error statistics and failure counts, at 15-minute intervals
· 16- and 32-bit cyclic redundancy check (CRC); 16-bit default
SONET/SDH-specific features:
· Compliance with G.707, G.783, G.784, G.957, G.958, and GR-253
· Supported SONET/SDH alarm and signal events:
◦   Signal failure bit error rate (SF-BER)
◦   Signal degrade bit error rate (SD-BER)
◦   Signal label payload construction (C2)
◦   Path trace byte (J1)
· Section
◦   Loss of signal (LoS)
◦   Loss of frame (LoF)
◦   Error counts for B1
Line
· Line alarm indication signal (LAIS)
· Line remote defect indication (LRDI)
· Line remote error indication (LREI)
· Error counts for B2 |
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