Nowadays, with the rapid development of communication network technology, the application range of telephone optical multiplexer is becoming wider and wider. In the process of using telephone optical multiplexer, we must first understand the telephone optical multiplexer, such as various parameter settings of the telephone optical multiplexer, etc. Wait, only by clearly understanding the telephone optical transceiver, we can better use the telephone optical mux. Next, the editor of Feichang Technology will take you to learn more about the technical parameters of the telephone optical mux? Let’s take a look!
Technical parameters of telephone optical mux
- E1 interface:
Bit rate: 2.048Mbit/s ±50ppm
Reference standard: ITU-T G.703, G.704, G.712
Line code: HDB3
Jitter characteristics: ITU-T G.823
Interface impedance: 75Ω (optional 120Ω)
Physical interface: BNC (RJ45)
- User and loop interface:
Impedance: 600Ω
Insertion loss: -3±0.75dB
Frequency characteristics: 300～3400Hz (-0.6～+3dB)
Crosstalk attenuation: ≥65dB
Physical interface: RJ11
- Two/four wire audio interface:
Impedance: 200Ω+680Ω||0.1μF
Four-wire AD gain: 14dB (adjustable)
Four-wire DA gain: -2 dB (adjustable)
Four-wire AD frequency characteristics: -0.2 – +0.2dB
Four-wire DA frequency characteristics: -0.2 – +0.2dB
Second-line AD frequency characteristics: -0.2 – +0.2dB
Second-line DA frequency characteristics: -0.2 – +0.2dB (adjustable)
Return loss: 40dB
Balance: 70dB
Common mode rejection ratio: 70dB
Power supply rejection ratio: 30dB
Idle channel noise: ≥65dB
Ring resistance: 600Ω
- Ethernet interface:
Support IEEE 802.3/802.3u, IEEE 802.1Q (VLAN)
Interface rate: 10/100M adaptive
Full duplex, half duplex fully adaptive
Support cross-line straight-through line adaptation
- Physical interface: RJ45 seat
RS232/V.24 interface:
Electrical Characteristics: Compliant with CCITT V.28 protocol
Transmission rate: asynchronous ≤ 19200bps
- Size:
19-inch 1U standard chassis:
221mm(D)*485mm(W)*44mm(H)
- Power supply:
Input: AC 220V DC-48V
Power consumption: ≤10W static
