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Ø Remote monitoring of the remote device by the local device (unique double-row indicator, upper-row indication and lower-row indication) Integrated circuit based on independent intellectual property;

Ø Ethernet interface 10M/100M, full / half duplex fully adaptive, support VLAN protocol;

Ø Provide two kinds of clock: main clock, line clock;

Ø Provides three kinds of loopback function: The local end of the optical loop, Ethernet local loop, so that the opposite end of the Ethernet ring;

Ø You can set the auto-rate setting of the remote device commanded by the local device;

Ø Pseudo-random code test function, easy to open circuit that can be used as a bit error meter;

Ø Ethernet can support N * 64k rate, the rate is adjustable from 64K-1984K;

Ø Ethernet monitoring automatic reset function, will not crash;

Ø Rich Ethernet data prompt function, real-time prompt data communication status;

Ø Provide 1-4 voice access to support for caller ID and reverse billing functions;

Ø Support each site put the number function;

Ø Voice port supports FXO port and FXS port , FXO port and program-controlled switch docking, FXS port and the user's phone connected;

Optical interface (single fiber / dual fiber)
Wavelength	Single mode:1310nm / 1550nm; Multimode 850nm / 1310nm
Fiber	multimode, single mode
Transmit power	9dBm / -5dBm
Transmission length	multi-mode 2 km, single mode 40,60,120 km
Receiver sensitivity	better than-36dBm (BER <e-11)
Receive dynamic range	> 27dB
Connector	SC / FC / ST

FXS phone interface
Physical interface	RJ11
Ringing voltage	75V
Ringing frequency	25Hz
Second-line input impedance	600Ω (off-hook)
Return loss	40dB

FXO switch interface
Ringing voltage		35V
Ringing frequency		17Hz-50Hz
Second-line input impedance		600Ω (off-hook)
Return loss		40db
Ethernet
Physical interface	RJ45 , support Auto-MDIX
Protocol	Support IEEE802.3 , IEEE802.1Q(VLAN)
Network Interface Rate	10 / 100M adaptive
Working mode	duplex / half duplex adaptive
MAC Address Table	You can learn 4096 MAC addresses

4-Channel Telephone Multiplexer.doc