Datasheet

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Table 5. E1 Network Interface Specifications
E1 Network Interface
Transmit Bit Rate
2.048 Mbps ± 100 bps/50 ppm
Receive Bit Rate
2.048 Mbps ± 100 bps/50 ppm
Data Rate
1.984 Mbps (framed mode) per E1 port
Clocking
Internal and loop (recovered from network)
E1 National Bits
Fixed (nonconfigurable)
Encoding
High-density bipolar three (HDB3)
DTE Interface (WIC mode)
Fractional service
DTE Interface (VIC mode)
G.704 or structured
DCE Interface
G.704 or structured
Dimensions (H x W x D)
MFT VWIC2: 0.8 x 3.1 x 4.8 in. (2.1 x 7.9 x 12.2 cm)
Weight
• 1 port VWIC2-1MFT-T1/E: 0.125 lb (57 g)
• 2 port VWIC2-2MFT-T1/E1: 0.137 lb (62 g)
Diagnostics
• ANSI T1.403 Annex B/V.54 loopup/down code recognition, network loopback, and user-initiated loopbacks, network payload loopback,
local DTE loopback, and remote line (codes: V.54, loop up, and loop down)
• Bit-error-rate-testing (BERT) patterns: All 0’s, all 1’s, 1:2, 1:8, 3:24, QRW, QRSS, 63, 511, 2047, and V.54/T1.403 annex B bit patterns,
and two user-programmable 24-bit patterns
• Alarm detection: Alarm indication signal (AIS), time-slot 16 AIS, remote alarm, far-end block error (FEBE), out of frame (OOF), cyclic-
redundancy-check (CRC) multiframe OOF, signaling multiframe OOF, frame errors, CRC errors, loss of network signal (red alarm), loss
of network frame, receive (blue alarm) (AIS) from network, receive (yellow) from network performance reports or error-counters CRC,
errored seconds, burst errored seconds, severely errored seconds, Ft and Fs framing errors for SF framing, (FPS) framing errors for ESF
framing, and 24-hour history stored in 15-minute increments
• Onboard processor for real-time facility-data-link (FDL) messaging, in-band code detection and insertion, alarm integration, and performance
monitoring
• Full FDL support and FDL performance monitoring, according to configurable standard: ANSI T1.403 or AT&T TR 54016
DSU/CSU
• Selectable DSX-1 cable length in increments from 0 to 655 feet in DSU mode
• Selectable DS-1 CSU line build-out: 0, –7.5, and –15 dB