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Compactness, cost-efficiency and versatility highlight the OPCOM3103, which is good
suited for transmit voice and data. The service offered range from traditional E1 to
new service such as Fast Ethernet.
OPCOM3103 provides fixed 32 ports E1, 8 ports Fast Ethernet over 2 VCG individually
and it can also provide 2STM1 ports or 2DS3/ E3 ports or 2GE ports by extension
slot. For Ethernet over SDH service, the introduction of standard Generic Framing
Procedure ( GFP) mapping, Link Access Procedure SDH ( LAPS) virtual concatenation,
and Link Capacity Adjustment Scheme ( LCAS) for dynamic bandwidth allocation are
used by OPCOM3103. These features enable OPCOM3103 is next-generation STM-1
access equipment.

Features :
Standalone Mini SDH Add/ drop Multiplexer( ADM) and Terminal Multiplexer( TM) , it is
composed with mainboard and sub card, the sub card support hotswap.
STM-1 Interface:
Two SDH STM-1 interfaces provided by mainboard, can be configured to 2
independent line or 1+ 1 mode, optical interface adopt SFP module.
Support 1+ 1 optical interface protection and 1+ 1 low path protection, protection
switching time is less than 50ms.
E1 interface:
Providing fixed 32 E1 balanced interfaces on the front panel.
Ethernet interface:
Totally 8 10/ 100M electrical Ethernet interfaces, the first two electrical Ethernet
interfaces of which can use 100M optical Ethernet interface, the two optical interfaces
adopt SFP module.
8 Ethernet services to share 63VC12 or 3VC3.
Ethernet support GFP LAPS encapsulation, the service granularity support VC12 VC3,
and support VCAT LCAS function.
Extension slot:
2STM1 card: two STM1 ports, support 1+ 1 protection, adopt SFP module
8EOS-2GE card: Aggregate 1~ 8 VCG to 2 GE interfaces, adopt SFP module
2 DS3/ E3: two DS3/ E3 interfaces, support independent mode or 1+ 1 protection mode
Cross connection:
Maximum cross connection capacity is 6x6 VC4 18x18 VC3 378x378 VC12, support
VC3 VC12 hybrid cross connection, flexible in network topology
Clock:
The clock in support of lock, holding, free vibration mode, compliant with ITU-T G.813
recommendation.
Equipment timing source is support 2 uplink STM1 line clock
the former 4 E1 line
clock
2 downlink STM1 line clock
one 2Mbit external clock
one 2MHz external
clock and local oscillator. While providing one 2MBit & one 2MHz external clock
output.
The former 4 E1 support E1 retiming function.
Other features:
Support point-to-point, chain topology and ring topology patterns
ALS ( Auto-Laser-Shutdown) function can efficiently control the output of optical signal
in disconnection condition
Dying Gasp function can detect the remote device power off alarm trap
Local optical interface & local E1 interface support external loop back and internal
loop back facilitate link detection
Complete alarm trap, performance monitory function
Management:
SNMP interface and CONSOLE interface provide in-band and out-of-band network
channel, in support of local and remote software online upgrade