T 38 Compatible Fax Machine

Most voip gateways and ata s now support t 38 reliably.

T 38 compatible fax machine.

Many businesses rely on fax machines and fax machines are designed in a way that they cannot read data the same way a computer with a modem can. This is then sent either to a t 38 enabled end point such as fax machine or fax server or another t 38 gateway that converts it back to pstn pcm or analog signal and terminates the fax on a t 30 device. By default the selection for fax is already enable and set. The gateway works by taking your fax machine s signal and converting it into an internet compatible one rather than first digitizing it into an audio signal.

Setting up your fax machine. The pap2 and the pap2t do not support the t 38 fax protocol. All platforms on this page have been rigorously tested and certified as compatible with our service by our t 38 fax interoperability team. Fortunately most newer fax machines utilize a newer t 38 protocol.

Implementations tend to use udp due to tcp s. Scroll down to the bottom of the screen and look for audio configuration. In the diagram above both the gateway and the fax machine behind the gateway would have to be t 38 capable. T 38 defines how to deal with faulty lost or repeated data packets.

We have compiled an extensive list of platforms and how to configure those devices to perform t 38 fax over ip foip. For the g3 fax machine on an analog line this process will be transparent. In theory this should work well because the data network is designed for the transmission of data where the voice network wasn t. A t38 compatible ip pbx or application is necessary to send fax documents over a data network to standard fax machines.

T 38 is described in rfc 3362 and defines how a device should communicate the fax data. Since the vast majority of fax machines in existence today do not have t 38 built in any fax machine starts off the call as a. That is why the t 38 protocol was implemented. One solution send to newer fax machines.

Log into the spa s web based setup page and click the line tab you want to setup your fax machine. The connection of a normal fax machine to a t 38 compatible voip connection is via an ata analog telephone adapter or a special connection on the router which must also be t 38 capable. T 38 and internet faxing. Looking for a t 38 compatible device.

The t 38 recommendation defines the use of both tcp and udp to transport t 38 packets. As a result these machines can more reliably receive faxes sent over voip. The t 38 protocol was designed to provide a raw data method to transmit fax s.