An operator needs to drop some of its traffic from OSN 7500 to the siemens Hit 7070 via STM -4 Link. Huawei equipment is using SLQ4 board and Hit is using IFQ 622 board. The engineer finds the output power of OSN 7500. but upon conecting a fiber from Hit out to OSN in the System doesnt sync and RLOS remains on OSN.
RLOS alrm is reported at the 4SLQ4-1 port of the OSN 7500.
1> Enabled the Hit port
2> Measured the output optical power at HiT outport and still no power.
3> Checked that the ALS function Of Hit Was enabled by default
4> Diabled the HiT ALS(automatic laser shutdown) function.
5> Measured the out power at HiT and found it to be -11dBm
6> Used 5dB attenuators at receive port of OSN and Hit and finished the connectivity.
1> Measure the power at out put of the OSN SLQ4-1 out Port.
2> The ouput power os OSN was found to be normal i.e -11dBm
3> Checked the output power of HiT outport .
4> No transmitt power form HiT out port.
5> Found that the HiT port was diabled via software.
The optical sensitivity of all vendors might be different so it is very crucial to measure the output optical power before establishing any connectivity between different vendors.