Scaling Concurrent Calls on a Busy DID Number

How many calls your DID can handle at once depends on the SIP lines (channels) on your FreeVoIP account, not on the number itself.

A free FreeVoIP account includes two SIP lines, so two calls can be connected simultaneously. If your DID gets busier — a marketing campaign, seasonal peaks, a growing support desk — you can add more lines, up to the 25-line SIP account at £25/month built for offices.

The DID stays the same; you simply give it more capacity underneath so callers hit a queue or another agent rather than an engaged tone. Plan your line count around your busiest expected minute, not your average.