What does **8 Do?

[NonnaFilomen]

i used **8 before dialing a number and the call quality was really good (other person can hear me well).  Does the **8 mean I'm going through my landline number and not through my GV number?

[RonR]

Yes.  Service route access codes can be used to override the PrimaryLine setting:

**1 + number  -> SP1 Service
**2 + number  -> SP2 Service
**8 + number  -> PSTN Line
**9 + number  -> OBiTALK Service