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G.703 Interface
   Type: Full-duplex fixed at 2048kbps ±50 ppm
   Line: 4wire
   Range: Up to 1000 ft. on 26AWG
   Impedance:
     RJ-45 120 ohm (balanced)
     BNC 75 ohm (unbalanced
   Complies with: ITU-T G.703, G.704, G.706, G.732 and G.823
   Frame format: CAS/CCS/Un-frame
   CRC check: CRC-4 /Non-CRC4
   Line code: HDB3/AMI
Data Port Interface
   Type: EIA-530/V.35/V.36/X.21 with DTE/DCE mode
   Data Rate: 64kbps up to 2048kbps(64k step-on)
   Connector: SCSI/F with adapter cable.
   Line code: NRZ
   Adapter: Change-cable detected by automatically
Auxiliary
   Clock mode: Internal, Recovery, Data port±50 ppm
   Indicator: LCD, LED with Power, SYNC, AIS, BPV
   Management: 16 x 2 chrematistics LCD and 4 keypads
   Diagnostic: LL, DL
   Power: AC 110/230 V 50/60Hz adapter to AC/DC 9V
   Temp: 10 to 55
   Tumidity: 10 to 90,Non-condensing
   Dimensions: 19cm(L) × 10cm(W)× 2.6cm(H)
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