2E1 to 2Eth Converter
８
9.Local loop function available ( Four E1 channels are looped together)
10. Support CRC error limitation function.
11. When error code over E1 transmission direction is beyond limitation, only E1
transmission direction is isolated. It has no impact on the other direction.
Asymmetry is materialized in process of Ethernet transmission to assure the Max.
Data transmission rate with E1 fault.
12.
When a receiving direction of any E1 link
Receives LOS, AIS and LOF alarms, the corresponding send direction will not
be influenced so that Asymmetry transmission is materialized over E1 link.
13.
when all the receiving directions of E1 links are cut off and isolated, local
alarm and SNMP information can still be transmitted to the remote endpoint
through sending direction of E1 link. Uni-direction transmission is
materialized over E1 link. The Function is especially suitable for associated
operating between protocol converters and optical equipments. It is used to
diagnose fiber failure when the uni-direction fiber of optical equipment is shut
off.
3
．
Specification
1. G.703 interface
* rate
：
n *(2.048Mbit/s
±
50ppm) (N=1
～
2)
* Code type
：
HDB3
* Impedance
：
75
Ω
unbalanced/120
Ω
balanced
* Interface standard
：
Meets G.703and G.704standards
