Instruct: Classify a given review as either positive or negative.
Query: Connected well over VOIP

My company produces a monitoring system for solar power systems. When a customer requested modem support for a remote location I was worried because we use VOIP for phone service and I was afraid we wouldn't be able to perform our test before sending the product to the customer location. The USR5686E fax modem had no trouble connecting to a second US Robotic modem, a USR5637 USB modem (56K USB Modem Windows Mac Linux), over a single internet connection with carrying both VOIP calls.Both modems worked incredibly well and the tests were completed without a hitch.