Optical port parameters	Fibre rate	150Mb+ppm
	Wave lenghth	1310nm
	Output power	-12~-11dbm
2M Interface	Line Code	HDB3
	Bit rate and tolerance	2048bps+50ppm
	Impedance	75Ohm,unbalanced or 120Ohm,balanced
	Frame structure	PCM30/32
Data Interface	64Kbps bi-directional data interface	in accordance with I TU –T G.703 suggestion
	V.24	asynch≤9.6Kb/s synch64Kb/s
	V.35	N*64K(N≤30)
Audio features	10/100Base T	full compliance with IEEE802.3
	Audio range	300~3400HZ
	Audio transmission mode	second/forth-wire
	Compression ratio	I TU G.711 A Law
	Circle current	25mA/road
Power Supply	DC-48v(-36v~-72v) or 220v(180v~240v)
Dimension	L*H*D:482.6(19in.)*266mm(6U)*280mm

Features _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _  

v       Clock mode: master clock,E1(optional function)clock,subscriber clock,etc.

v       Height 1U(6U),width 19-inch,fixable arbitrarily more than 20 kinds of interface cards

v       64kbps-rich user interfaces: FXO, FXS, EM2/4-wire audio interface, Ethernet interface, V.35

data interface,hot line interface, magnetic interface, 2100Hz carrier magnetic card ,V.24/V.28 data interface(RS232/RS485), and V.24 interface with data and clock synchronous transmission, ITU 64kbps co-directional data interface(G703), baseband interrupt interface, No.1 signaling and phone exchange cards

v       Consumate function control switch and the alarm indicator of sound and light on the panel

v       Powerful network management platform

v       Network management interfaces: RS-232 serial interface and 10/100Base-T Ethernet

v       With Caller ID and polarity reversal signal

v       With the optical interface transmission,the line speed of Ethernet interface can reach fast, providing transparent transmission of E1 interface and user-friendly to expand

v       ADM features a powerful and flexible allotment of time slots in 2M

v       Power: AC and DC optional

v       The transmission of single/dual fiber,single /multi mode, short-distance/long-distance mode can be flexibly switched, no need to replace devices

v       The functional card is designed in modules,and interfaces can be plugged or pulled into different combinations

Eg:uplink E1interface:8 channel FXO/FXS + 4 channel Ethernet/100M+1v.35(N*64Kbps)

v       Optical interface supports 1+1 double optical interfaces protection mode(in which one is backup)compatible with single mode, no need to replace devices;optical module supports hot pull and plug

v       SDH/PDH/E1, small in size,compact in design, can provide a variety of audio or data transmission services.By using the switches on the front board,uplink interface can be changed freely from E1(G.703) to PDH or SDH optical interface,no need to change devices

v       All the interfaces have the function of protection against lightening strike.

v       Greatly facilitate the daily work of installation and maintenance troubleshooting