add your SG# in GV
your phone <- SPA1001 ATA <- GV <- domestic in-coming calls are free
your phone -> SPA1001 ATA (set GV # as the caller ID) -> domestic/international out going calls are 1.9 cent per minute
Callers will always see your GV#, and the SG # is hidden to them.
Better to remove voice mail/call forwarding from SG.
Disable the "call presentation" in GV.
You can also call international numbers in GV (2 cent per min).
选择“Disable on www.wenxuecity.com”
选择“don't run on pages on this domain”
