(1) Having two row of LEDs, upper row indicate local status, lower row indicate remote status and alarm status. 
(2) Based on self –opyright IC, high software content (kernel chip based on software)
(3) Realize take out specified time-slots to compose N*64k(N=1—32) data channel.
(4) Provide 3 loop functions: local loop(ANA), to remote loop(DIG), order remote loop(REM).
(5) Have pseudo random code test function, easy the installation and maintenance.
(6) Realize rate setting of remote equipment (in slave clock status) when local equipment is in master clock status.
(7)E1 fiber modem can be used with V.35 fiber modem by pair, saved 1 G.703/V.35 converter.
(8) Power supply option: AC220V, DC-48V. The positive and negative terminal can be exchanged for DC-48V, easy for installation and maintenance.
(9)Network manager interface use SNMP.
(10)Two types:Standalone, desktop, 19inch;Card,usually be inserted in our rack 19 inch. 
 
Technical specification:
1. E1 interface
Interface Rate: N*64k
Coding: HDB3
E1 Impedance : BNC 75Ω(unbalance) and RJ45 120Ω(balance).
Interface character: match G.703
Jitter tolerance : according with G.742 and G.823.
2. Fiber interface
Interface: FC/SC
Wavelenth: 850nm/1310nm multi-mode, 1310nm/1550nm single mode.
Transmit distance: 2 Km multi-mode, 40 Km/60Km/120Km single mode.