4.2 VoIP and FAX VoIP: Voice over IP | DSLReports.com, ISP Information

Table of Contents

1. What is VoIP? (2)
2. How does it work? (2)
3. What are the advantages? (2)
3.6 User Reviews (3)
4. Overview of VoIP Technology (5)
4.2 VoIP and FAX (1)
5. Hardware and Software (7)
6. Who are some providers? (2)
7. Vonage Information (9)
8. Problems (2)
9. Glossary (3)
10. Useful Links (4)

Can I FAX with VoIP?

This question comes up on a regular basis. The answer is "maybe". Some providers allow it, some don't.

See this thread for some information. If your provider isn't mentioned there, do a forum search on "FAX" and you may turn up a thread where your provider is discussed.

got feedback?

Many of the VoIP provider's termination providers are premium and generally will support faxing over G.711 . Your biggest problem is going to be with your ISP. The problem seems to be they're overselling their networks to the point where QoS can be quite bad, even through your throughput may be OK. Do not disable ECM mode or reduce the baud rate below 14400, as many seem to suggest - it only makes things worse. Also you want echo cancellation ON.

2010-12-07 02:17:39 (jason_m )

Callcentric with G.711 codec fax fine with our testing.

2009-07-09 18:46:07

by KeysCapt

All FAQs » VoIP: Voice over IP » 4.2 VoIP and FAX

Can I FAX with VoIP?