I am onsite at a new client's house. Old low voltage guy didn't run 2 Cat5 and RG6 as requested and homeowner didn't catch it until after they moved in.

I have Cat5 being used for computer but am not using RG6 going into client's home office.

Option 1
Take one pair out of Ethernet and use for phone but I thought that was no-no.

Option 2
Use RG6 and take my chances.

Option 3
Use phone outlet over A/C adapter. I hear that may interfere with WAP but don't know if true.

TIA