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DESCRIPTION |
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ZYEQ-155 SDH -MSTP is a compact model of SDH optical ADM device which is of modularization structure within a standard 19'' 1U rack and the quantity of its various modules in a configuration of a certain case increase or decrease proportionally depends on needs of users. It is available for users to be config, monitor, maintain and down load software for ZYEQ-155 SDH –MSTP remotely. |
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FEATURE |
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OIU module : 2 155M standard SDH STM-1 Optical Interface, Optical Interface Unit ; |
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Optional 1 155M standard SDH STM-1 electrical interface to connect to SDH microwave equipment; |
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Tributary module and expansion board of E1 mapped unit( EMU) support 4E1, 8E1, 16E1, 21E1, 32E1 and 63E1 ports depend on demands; |
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MCU module: Network management unit and Clock unit; |
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2 10M/100M auto-negotiate Ethernet interfaces in tributary side share channels of multiplex and can occupy configurable bandwidth from 2M to 100M. |
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4 RS-232 transparent asynchronous communication channels for the 3 rd party's communication. |
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Ability of Managing numbers of sub-networks; |
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Network management interface: Ethernet interface, local terminal and test RS-232 interface. |
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Reliable sub-network connection protection(SNCP),and the protective switch over on SF(Signal Fail) or SD(Signal Degradation) as option; |
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Optional dual optical interface (1+1) protection ; |
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Alarm indicating signal( AU AIS) ? B1 and B2 error embedded for maintenance in management unit; |
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Both local and remote loop-back test in the optical ports as well as E1 ports; |
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Configuration of the DTMF, ringing and phone number in service phone. |
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SPECIFICATIONS |
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STM-1 Optical port |
Bit rate: 155.520Mb/s work wavelength:1310nm, 1550nm |
emitted light power: 0~-5dBm –8~-15dBm |
receive sensitivity: –36dBm |
Synchronous
clock interface |
abide by the G.703 suggestion:
input/output reference clock) 2048kHz 4.6ppm |
2048kBits/s 4.6ppm |
E1 Electric interface |
E4:
Bit rate: 139.26Mb/s
Code pattern: CMI
Impedance: 75O(unbalance) |
E3:
Bit rate: 34.368Mb/s
Code pattern: HDB3
Impedance: 75O(unbalance) |
E1:
Bit rate: 2.048Mb/s
Code pattern: HDB3
Impedance: 75O(unbalance) |
Clock holding sensitivity |
0.37ppm(24 hours) |
| Power supply |
-48Vdc ±20% |
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SOLUTIONS |
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| simple frame |
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| applications |
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