U
U
s
s
e
e
r
r
M
M
a
a
n
n
u
u
a
a
l
l
3. Parameters
3.1. Basic configuration
●
Main circuit card: 16 E1 interfaces, two STM-1 interfaces;
●
Extension card: E1 sub card or EOS sub card;
●
E1 sub card provides 16 E1 interfaces and EOS sub card provides 4 or 8
Ethernet electrical interfaces;
●
Power supply card: 220VAC, –48VDC or +24V;
●
Network management interface: CONSOLE interface, SNMP network
interface;
3.2. Optical interface parameters:
●
Rate: 155.52Mb/s
●
Line coding: NRZ
●
Optical interface type: SC interface
3.3. E1 interface parameters:
●
Rate: 2048Kb/s±50ppm
●
Interface coding: HDB3 code
●
Impedance: 75
Ω
/unbalance
●
Physical electric feathers compliant with ITU-TG.703 standards;
●
Jitter performance compliant with ITU-TG.823 standards;
●
Input jitter compliant with ITU-TG.823 standards;
●
Output jitter compliant with ITU-TG.783 standards;
3.4. EOS sub card Ethernet interface parameters:
●
Rate: 10/100 M auto-adapt
●
Interface type: RJ-45
●
Compliant with IEEE802.3 standard
●
Line sequence is the same with that of switch
●
Encapsulation supports LAPS, GFP
●
Support LCAS
6
