▶ FOX-51
 
 
 
   
 
FOX-51F is the subscriber optical terminating equipment that accesses and multiplexes DS-0 class signal (voice and data), 1,544kbit/s (DS-1) and 2,048kbit/s (DS-1E) as a tributary signal to transmit it optically to the counterpart equipment with the opposite processing, which enables central office and ring topology.
 
 
[System capacity]
- Optical signal capacity: 1 × STM-0 (51.840Kbit/s)
- DS-1, DS-1E class tributary signal capacity
* Leased line capacity when DS-1 is mixed with DS1E class: DS-1 and DS-1E signal can be accommodated for each unit within 18 × DS-1/18 × DS-1E capacity
* For N:1 protection function, up to 15 lines can be accommodated. (under N=5)
- DS-1E class leased line capacity : accommodates DS-1E × 21 lines
[Channel part capacity]
- Voice class service
* Line capacity : 360 lines (using 2 channel shelves, IDLC is configured for each channel shelf)
* Channel shelf : max 180 lines
* Unit : max 6 lines
- Data service : 2/4W E&M
* Line capacity : 360 lines (using 2 channel each)
* Channel shelf : max 180 lines
* Init : max 6 lines
[Data class service capacity]
- High-speed data(N × 64Kbit/s) service: DS64N
* Line capacity : 60 lines (using 2 channel shelf)
* Channel shelf : max 30 lines
* Unit : max 1 line
- Data service, tandem service in the central office
* Line capacity : 360 lines (using 2 channel shelves)
* Channel shelf : max 180 lines
* Unit : max 6 lines
- ISDN BRI service * line capacity : 120 lines (using 2 channel shelves, IDLC is configured for each channel shelf)
* Channel shelf : max 60 lines
* Unit : max 2 lines
- N × 64kbit/s long distance transmission service: MSDSL * line capacity : 60 lines (using 2 channel shelves )
* Shelf : max 30 lines
* Unit : max 1 line
 
 
- Voice subscribers Up to 180 Ch/ shelf(6ch/unit)
- Data subscribers Up to 180 ch/shelf(6ch/unit)
- ISDN subscribers Up to 60 ch/shelf(2ch/unit)
- MSDSL, Nⅹ64 subscribers Up to 30ch/shelf(1ch/unit)
- Optical Interface Line rate: 51.84Mbps ± 20ppm
* Line code: Scrambled NRZ
* Wavelength: 1,260~1,360mm
* Optical Output: -8~-15dBM
* Minimum receiver sensitivity: -28dBM
* Maximum optical loss: Less than or equal to 8.2dB
- Trunk(DS1E) Line rate: 2.048Mbps ± 50mm
* Line code: HDB3 or AMI
* Pulse type: ITU -T G.703
* Impedance:120Ω ± 5%
* Transmission Media: 0.65mm Pair cable

- Trunk (DS1) Line rate: 1.544Mbps ± 50ppm
* Line code: B8zs or AMI
* Pulse type: ITU-T G 7.03
* Impedance: 100Ω ± 5%
* Transmission media: 0.65mm pair cable
- Voice line (2W) Tx level: 0dbm
* RX level: -2dBM 0.5dBM
* Tx/Rx impedance : 600Ω, balanced
* Signal type: 10pps, 67 ± 7% break ratio
- Voice line (4W) Tx level:-16dBM
* Rx level: +7dBM
* Tx/Rx impedance: 600Ω, balanced
* Signal type: 10pps. 67 ± 3% break ratio
- High data rate line Transmission mode: Full duplex
* Digital data rate: 64~1,920 Kbps(Nⅹ64Kbps, N=1,2,3….30)
- Low data rate line Data type: Binary serial bipolar
* Transmission mode: 4W full duplex
* Input/output impedance: 135Ω ± 5%
* Digital data rate: 2.4, 4.8, 9.6, 19.2, 56, 64Kbps
- MSDSL Transmission mode: Full duplex(8, 16, 32, 64 CAP)
* Input/Output impedance: 135Ω ± 5%
* Transmission rate: 64kbps~1,536Kbps(N = 1, 2, 3, 4, 6, 8, 12, 16, 24)
- E1DSL Transmission mode: Full duplex(128 CAP)
* Input/Output impedance: 135Ω ± 5%
* Transmission rate: 1.920Mbps, 2048Mbps
- ISDN BRI line Total transmission rate: 160Kbps(full duplex)
* Input/Output Impedance: 135Ω ± 5%
- Ring generator Input voltage: DC -48V
* Output voltage: 80Vrms ± 4Vrms
* Output frequency: 20Hz ± 1Hz, signed wave
* Maximum output: more than or equal to 20 watts
- Physical specifications 19 inch shelf
* Optical mux: 3U Channel bank: 6U Operation shelf : 1U
- Rack (HⅹWⅹDmm) COT rack (A type): 2,750ⅹ600ⅹ600
* COT rack(B type): 2,200ⅹ600ⅹ600
* RT rack(Indoor A type): 1,400ⅹ600ⅹ600
* RT rack(Indoor b type): 1,000ⅹ600ⅹ600
* RT rack(Indoor c type): 440ⅹ534ⅹ500
* RT rack(outdoor type): 1,600ⅹ780ⅹ900