Is there a way to balance more than 7 DSL lines with a balance 710?

Just looking if that is possible.
Actually I’m balancing 7 lines with it but I will need more DSL lines in the coming few months.

Thanks,

The Balance 710 has 7 Ethernet WAN ports so it is not possible to add more lines. The next higher model is the Balance 1350 and it has 13 Ethernet WAN ports.