Acmepacket 3900 with fiber SFP, works only with max 2m cable
I have just replaced the Rj45 with Fiber SFP's
SFP is AVAGO AFBR-5710PZ (bought from Oracle, official channel)
The SBC is connected to a Cisco Siwtch.
The connection is working only with cable with max length 2m, longer cable is not working.
Is there anything I can do on the SBC side?
SBC is :
Acme Packet 3900 SCZ8.4.0 Patch 5C (Build 350)
Oracle Linux branches-7/el7-u9 {2021-01-13T07:00:00+0000}
Build Date=05/21/21