I want to use MA5680T main control board SCUN as uplink so as to save the uplink board cost, can I?

Yes, you can, but we don't suggest, as Huawei OLT SCUN load balance is not well supported, so most customers are using SCUN in active/standby mode, if OLT lose power, which SCUN will work as the active SCUN will be randomly, which may affect service, also if the link is down, the active SCUN will not shift to the standby SCUN (it will only shift when SCUN board is down), then service may get affected also.

Yes, MA5616supports GPON uplink, make sure you select the uplink board with GPON ports, also get the GPON SFP module for MA5616.

Yes, you can, but we don't suggest, as Huawei OLT SCUN load balance is not well supported, so most customers are using SCUN in active/standby mode, if Huawei OLT lose power, which SCUN will work as the active SCUN will be randomly, which may affect service, also if the link is down, the active SCUN will not shift to the standby SCUN (it will only shift when SCUN board is down), then service may get affected also.

Yes, you can, but we don't suggest, as Huawei OLT SCUN load balance is not well supported, so most customers are using SCUN in active/standby mode, if OLT lose power, which SCUN will work as the active SCUN will be randomly, which may affect service, also if the link is down, the active SCUN will not shift to the standby SCUN (it will only shift when SCUN board is down), then service may get affected also.

Yes, you can, but we don't suggest, as Huawei OLT SCUN load balance is not well supported, so most customers are using SCUN in active/standby mode, if OLT lose power, which SCUN will work as the active SCUN will be randomly, which may affect service, also if the link is down, the active SCUN will not shift to the standby SCUN (it will only shift when SCUN board is down), then service may get affected also.

Yes, Huawei SCUN main control board has uplink ports, it can deloy uplink function in theory, but this solution is not recommend, normally 2*SCUN configured in one Huawei OLT chassis, one is active, another is standby, if active board stops working, all service can be actomatically synchronize to standby board, but since not two boards both configured uplink modules, so the uplink service will be interrupted if deploy uplink function on SCUN.
In all, Huawei GICF and Huawei X2CS are the uplink board for MA5600T. Huawei SCUN boards Thunder link com

"Yes, Huawei SCUN main control board has uplink ports, it can deloy uplink function in theory, but this solution is not recommend, normally 2*SCUN configured in one Huawei OLT chassis, one is active, another is standby, if active board stops working, all service can be actomatically synchronize to standby board, but since not two boards both configured uplink modules, so the uplink service will be interrupted if deploy uplink function on SCUN.
In all, Huawei GICF and Huawei X2CS are the uplink board for MA5600T."The answer comes from a website that if you have more questions to visit their website www.thunder-link.com hopefully it will help you. Huawei MA5680T OLT Access system Thunder link com Huawei GICF Uplink Board Thunder link com

Yes, Huawei SCUN main control board has uplink ports, it can deloy uplink function in theory, but this solution is not recommend, normally 2*SCUN configured in one Huawei OLT chassis, one is active, another is standby, if active board stops working, all service can be actomatically synchronize to standby board, but since not two boards both configured uplink modules, so the uplink service will be interrupted if deploy uplink function on SCUN.
In all, Huawei GICF and Huawei X2CS are the uplink board for MA5600T.

Huawei MA5683T or Huawei MA5680T, Uplink board X2CS has 2*10GE optical module ports, the distance of SFP+ modules can reach 0.3KM, 10KM, 40KM, 80KM.

More related:
Huawei OLT
Huawei uplink board

Yes, you can, but we don't suggest, as Huawei OLT SCUN load balance is not well supported, so most customers are using SCUN in active/standby mode, if OLT lose power, which SCUN will work as the active SCUN will be randomly, which may affect service, also if the link is down, the active SCUN will not shift to the standby SCUN (it will only shift when SCUN board is down), then service may get affected also.
Huawei SCUN boards Thunder link com