Customer uses OSN 7500 in one site and OSN 3500 to another site. Between two sites are connected through Microwave. For OSN 7500 uses SLH1 port 16 and OSN 3500 uses SEP Port 1.Physical connections are ok but can not login from one site to another site.
Use any one port within port 1 to 8 of SLH1 board for microwave or optical fiber connectivity through STM-1 level for DCC resource.
SLH1 board has 16 STM-1 optical/electrical ports. Within 16 ports, first 8 ports (1 to 8) have the DCC resource. Remaining 8 ports (9 to 16) don’t have DCC.
As SLH1 board has 8 port (1 to 8) DCC resources. For link (MW/fiber) connectivity my suggestion is to use port 1 to 8. For switch interconnection or inter operator connection use port 9 to 16.