Voice-over-IP phone service provider Phone.com, which is based in Newark, New Jersey, said this week that it has expanded its presence in San Diego, by opening up new offices in Poway. Phone.com said it now has 25 employees working in network operations, customer support and developing new services and features at the location. The company also says it expects to add more employees in the facility this year to accommodate growth. Phone.com did not say how many people it intends to add at the location. Phone.com said the offices are next to Tierra.net, is partner and data center provider.