Poly ATA 40x Setup Guide for Power-T.38 SIP Trunks (Poly ATA 400 | Poly ATA 402)

Jeremiah Dluehosh
Jeremiah Dluehosh
  • Updated

Connect your Poly ATA 40x series (Poly ATA 400 | Poly ATA 402) to our fax-optimized Power-T.38 SIP trunks for reliable faxing over SIP.

The Poly ATA 40x series helps analog telephony join the digital world, transitioning from Public Switched Telephone Network (PSTN). As regions worldwide shift to digital networks, our solution keeps you connected.

Related Links:

Currently Recommended Firmware:  4.0.2.6778 Rev.A

Prerequisites

This article assumes:

  • You have signed up for a free trial of our Power-T.38 SIP trunking service
  • You have access to our customer self-care portal with an assigned role that allows you to add and delete SIP trunks.
  • You have used the T38Fax self-care portal to create a SIP trunk that you now wish to connect to your Poly ATA 402.
  • You have connected your ATA to your network and can login via the web interface.
  • You have an analog fax device connected to an FXS port on the ATA.

Update Firmware

Please upgrade your firmware to the newest version available. See the currently recommended firmware in the link above. Once downloaded, navigate to “System Management” and select “Device Update.” From here, click “Choose File” under firmware update to select the previously downloaded file. Finally, click the “Update” button.

Important Note: To make a configuration change within a section you will need to first uncheck the “Default” check box to the far right of each option. After you've configured each section, click the “Submit” button at the bottom of each page before moving on to the next. Once all steps in this article have been completed, reboot your device to ensure that your configuration options are retained.

Configure SIP Settings

Next, expand the “Service Providers” menu, and then expand “ITSP Profile A” and select the "SIP" section. Here you'll need to configure several options by first unchecking the “Default” check box to the far right of each option:

  • ProxyServer: sip.t38fax.com
  • ProxyServerPort: 5080 ⓘ
  • RegistrationPeriod: 300

 

Configure SIP Credentials

Next, expand the “Voice Services” menu and select “SP1 Service.” This is where you'll configure your SIP Credentials to link into our service. Under SIP Credentials, configure the following by first unchecking the “Default” check box to the far right of each option:

*X_UserAgentPort is the local SIP port, so if you have more than one device at a site, each device should have a unique port, such as 5081, 5082, etc.

  • X_AcceptSipFromRegistrarOnly: Enabled (Check the Box)
  • X_UserAgentPort: 5080 ⓘ
  • AuthUserName: SIP Username ⓘ
  • AuthPassword: SIP Password ⓘ

Be sure to submit your changes, and reboot if prompted.

Configure Physical Interfaces

Next, navigate to the “Physical Interfaces” menu and select “PHONE1 Port” and find the “Calling Features section” and disable the following:

  • CallWaitingCallerIDEnable: Disable (Uncheck both boxes)
  • CallWaitingEnable: Disable (Uncheck both boxes)

If you have a Poly ATA 402 model and plan to use both ports on the device, repeat this step on “PHONE2 Port” as well.

Submit your changes and reboot the device if prompted.

Configure Codecs

Finally, navigate to the “Codecs” menu and select the “Codec Profile A” sub-menu. Scroll to the bottom of this menu, and find the "Fax Event" section. Enable this by unchecking the default box and checking the enable checkbox. Then, under the "Codec Settings" section, you will need to set the following:

  • (G711A) Enable: Disable (Uncheck both boxes)
  • (G729) Enable: Disable (Uncheck both boxes)
  • (G726R32) Enable: Disable (Uncheck both boxes)
  • (G722) Enable: Disable (Uncheck both boxes)
  • (OPUS) Enable: Disable (Uncheck both boxes)
  • T38ECM: Enabled (Check the Box)
  • T38Reinvite: Callee Only

After submitting your final changes and rebooting, check the “System Status” page (under the “Status” menu) and see that SP1 is registered:

If you have a Poly ATA 402 model, you may want to set up the second analog line. If so, follow the steps below which outline how to configure two fax machines to independently use two separate numbers over one T38Fax trunk. Otherwise you can skip to the Fax Device Configuration section of this article.

Adding Another Line


1. Select the associated ITSP Profile (we used profile "A") and configure the following options:

  • X_SpoofCallerID: True (Check the Box)
  • X_UserEqPhone: True (Check the Box)

Submit your changes. Reboot your device if prompted.

2. Select the SP Service that corresponds to the ITSP Profile above (we used SP1 Service in this example). Configure the inbound call route to recognize the called number, and route the call to the appropriate Physical Interface port (e.g., ph1, ph2). As a reminder, we’re using the following numbers in our example—18043027000 & 18043027001—with the number ending in 7000 being the primary number on this trunk used for registration.

Under "X_InboundCallRoute" we have configured the following route:

{>(@.8043027000):ph1},{>(@.8043027001):ph2}

How does this work exactly? Let's break it down for clarification. Curly brackets { } are used to enclose each rule, each rule is separated by a comma. Adding > to the front of the rule specifies that we're performing our pattern recognition on the number being called (your phone numbers). We've enclosed two additional characters before the number: @. This syntax will match any number of characters before the last 10 digits of the called number (which will recognize these calls with or without a 1). After closing the parentheses we then simply define which port to send the call to, such as: ph1

Submit your changes, and reboot if prompted.

3. Finally, configure an Outbound rule, so that we can both send and receive faxes.

  • For line one, add:
    {(Mpli):pli(18043027000>$2)},
    to the front of the existing values.
  • For line two, add:
    {(Mpli):pli(18043027001>$2)},
    to the front of the existing values.

NOTE: The trailing comma is essential, and separates additional rules provided by default.

Submit your changes, and reboot.

Fax Device Configuration

Finally, configure your analog fax device to work properly with the ATA and your Power-T.38 SIP trunk. Review our Recommended Fax Machine Settings for details.

Test, Test, and Test Again

Early and extensive testing will ensure a successful deployment and high rates of user adoption and satisfaction over the long term. We encourage you, therefore, to establish a baseline of successful faxing by testing everything you may have configured above, fixing any errors you find, and escalating any problems you can’t solve yourself to our support team.

Not quite sure how to test? Don’t worry, we’ve got your back. We outline our recommended process in this testing support article. 

Support and Additional Resources

Customers looking for technical support can open a case via our customer self-care portal, or by using the “Submit a request” button at the bottom of most knowledge base articles.

We talk a bit about our fax-optimized SIP trunks and explain why T38Fax is the best choice for companies who rely on fax transmissions to conduct business in these articles:

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