Can I send Faxes over VoIP using my existing fax machine?

#1
Fax is an old technology that is a bit hit and miss with VoIP. Most people get round outbound faxing problem by plugging their fax machine into their now largely redundant BT line which they still need only for ADSL

A fax machine plugged into an ATA (Analogue Terminal Adapter) should work but, depending on the equipment and its age, it is sometimes unreliable - the only way to know is to try it.

Obviously, you can both send and receive faxes with our Fax service.

See: https://www.voipfone.co.uk/fax.php

Below is a guide for Linksys ATA users. (It may also work for Sipura and the Voipfone branded ATAs as they are all essentially the same unit.)

Sending a Fax Using a Voice Codec
One way of sending faxes using VoIP with Linksys adaptors is to use the common g.711a codec (A-LAW) which is normally used to transmit voice. This codec (including IP overheads) requires roughly 100kbps in either direction to work. In order to have a better chance of success the fax machine should be set to 14,400bps as any higher is unlikely to work over any VoIP connection.

The entire range of Linksys adaptors support fax pass-through using the g.711a codec. It is necessary to alter a few settings in the line tab of the web interface of the Linksys adaptor. You only need to alter the line the fax will be plugged into. The following settings will give the best results:

1 Network jitter buffer: very high
2 Jitter buffer adjustment: disable
3 Call Waiting: no
4 Three Way Calling: no
5 Echo Canceller: no
6 Silence suppression: no
7 Preferred Codec: G711a
8 Use pref. codec only: yes

There is no real way to guarantee this method of faxing is going to work all the time. A lot will depend on the quality of your Internet service from your ISP. As always with Voice-over-IP you will see more reliable results when using a router with Quality-of-Service functionality to prioritise voice traffic over data traffic on your Internet link.
Regards,

Voipfone Customer Services

iNet Telecoms Ltd (Voipfone)
Sovereign House
227 Marsh Wall
London
E14 9SD
United Kingdom

Registered number: 05168033
Vat Registration Number 858850966

Telephone: 020 7043 5555
Fax: 020 7043 5556

Web: http://www.voipfone.co.uk
Blog: http://www.voipfoneblog.co.uk
Forum: http://www.voipfoneuserforum.co.uk
Twitter: http://www.twitter.com/voipfone

Re: Can I send Faxes over VoIP using my existing fax machine

#2
It might not be supported and very old topic, but if anyone needs the info, I got a Pitney Bowes machine working through a Grandstream 701 with the following settings (on Voipfone)


1 Network jitter buffer: very high
2 Jitter buffer adjustment: disable
3 Call Waiting: no
4 Three Way Calling: no
5 Echo Canceller: no
6 Silence suppression: no
7 Preferred Codec: G726/32
8 Use pref. codec only: yes

Who is online

Users browsing this forum: No registered users and 0 guests

Copyright 2004 - 2017, iNet Telecoms® Ltd. All rights reserved.


cron