Phonecall tracking. For low volume businesses (4-8 calls/day from a PPC campaign), do you think it's necessary to have more than 2 numbers allocated to the pool?Phonecall tracking. For low volume businesses (4-8 calls/day from a PPC campaign), do you think it's necessary to have more than 2 numbers allocated to the pool? I've dealt with Phonewagon and Calltracking Metrics and both companies suggest 4. I think they're just trying to max sales. Would like the experience of other PPCers who deal with local businesses.