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titleLooking for FAXStation info?
This wiki is for fax services that use our SIPStation unlimited two-way trunks. For information on our new fax trunk services (FAXStation), please see the FAXStation wiki.

Table of Contents

How does it work?

We have implemented a reliable outbound fax service that we believe provides the most reliable fax service in the VoIP industry. We assure end-to-end T.38 delivery to our PRI-connected fax server to ensure your faxes hit the PSTN without improper transcoding and conversions. Our SIPStation fax service is available for the lower 48 US only and is delivered as a metered service at a cost of 2.4 cents per-minute for outbound callsrate. Inbound T.38 calls are part of your normal trunking service and do not carry a per-minute charge.  In Please visit to view the SIPStation terms of service.

In order to gain access to the fax service, you need to be set up for the "metered services" option in SIPStation. Metered services deduct funds from your reserve account as described in our wiki "How Metered Service Works."

How do I sign up?

  1. Log in to the SIPStation Store at at
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  1. Click on the "My Account" tab in the menu at the top of the page.
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  2. Scroll down toward the bottom "Metered Services" section.

  3. Enable T38 Faxing by changing the On/Off switch to "On" (green).

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Outbound T38 faxing in SIPStation is a pre-paid, metered service. When you enable T38 faxing, "Top Up Settings" are also automatically enabled as shown above, and your account will be charged the Top Up Amount. This amount will be placed in your reserve account, and the per-minute fax charges will be withdrawn from that balance. You can click the "Update" button if you need to change the default amounts. For more information on Top Up Settings please view our wiki "How Metered Services Work."


Global Fax Prefix

If using Fax Pro Overviewin in FreePBX to send outbound faxes from the User Control Panel (UCP), UCP can automatically add a fax prefix. The advantage of this is that UCP users would not have to remember any prefix when faxing from UCP. Instead they would just need to dial a 10- or 11-digit number. UCP would add the global prefix to the beginning of whatever the user dials. When setting this up, you just need to keep in mind that the resulting combination needs to match something in an outbound route for fax. Also keep in mind we need to receive *323 at the beginning of a 10- or 11- digit number in order for outbound faxing to work in SIPStation.