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Technology Characteristics
-> The Ethernet data will not be damnified if enlarge or reduce the transmission bandwidth by means of network management.
-> The E1 spur track on both ends can be connected not according to the serial number. E1 when a single slip direction fails, the other direction can still work.
-> E1 automatic test loop back and cut off function. The E1 channel will be cut off once find E1 signal loop back. Auto-restore the use of E1 after release. Avoid the network storm without interrupting operations
-> Perfect alarm indication. Display local/terminal option.
-> Support local E1 channel side loop back function, facilitate to test E1 channels.
Interface Parameters
Transmission interface:
   -> Realize Ethernet data transmission over 1~16E1.
   -> Support auto delete the fault E1 channels (BER more than 1E-6 or a serious warning LOS/AIS/LOF or the signal loop back); Auto-restore the use of E1 after eliminate the failure.
   -> For 16 E1 channels, the maximum tolerable time delay difference between any two can be up to 220ms. It will have an alarm for exceed the limit when the time delay difference over 220ms, meanwhile, business interrupt jitter tolerance, jitter transfer characteristics in the line with ITU-T G.823.
Ethernet interface:
   -> Provide 4 maximum shared Ethernet interface, support VLAN division based on interface, in the line with IEEE 802.1Q standard
   -> Provide 1024 pieces MAC address table, 5 minutes aging time
   -> Support frame length: minimum: 64 bytes, maximum: 1916 bytes
   -> Provide flux statistics for each Ethernet interface, such as the fault package number and total package number etc
   -> Provide PAUSE flux control function, can be equipped with network management
Management interface:
   -> Support trunk super terminal management or network management based on SNMP. (optional)
In line with ITU-T standard:
   -> GFP-F encapsulation s estion G.7041
   -> VCAT and LCAS s estion G.7042
   -> Ethernet to nxE1 map s estion G.7043
   -> Ethernet to E1 map s estion G.8040