Linksys SPA3102 Setup Guide

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Linksys SPA3102 Setup Guide

Postby Jake » 08/13/2014

Credits to Val, thank you for your help.

The attached PDF will help you set up your Linksys SPA3012 device from scratch. It is a known working configuration so if you are having troubles with your Linksys SPA3012 reset back to defaults and follow this guide.

1) Navigate to Voice-->SIP-->SIP Timer Values (sec)
a. Reg Retry Intvl should be changed to 120 seconds ... redentials
("Failed Registration Re-Try Interval: 120 seconds")

b.Mango suggests the SIP T1 default setting is too aggressive, and to help resolve potential registration issues, T1 should be set to 1.
Navigate to Voice-->SIP-->SIP Timer Values-->SIP T1
Change SIP T1 to 1

2) In your SPA3102, Navigate to the SIP tab-->NAT Support Parameters, and make sure that the following settings are enabled:

a)Handle VIA received-->yes
b)Handle VIA rport-->yes
c)Substitute VIA Addr-->yes

3. In your SPA3102, Navigate to Line 1 (or whatever you're using for FPL)-->SIP settings, and change SIP Port to a random number between 30000 and 60000. Do this for security reasons (to help avoid SIP Scanners/hackers). Also, this step may help to temporarily address a corrupted NAT association that's developed between a router and ATA (if you're having registration issues, try selecting a new random port number in this range, and then reboot the ATA. If that works, you were dealing with a corrupted/stale NAT association in your router).

4. In your ATA, navigate to Voice-->Line (whichever you use for FPL)-->Supplementary Service Subscription-->Block CID Serv:
a) change to no
b) Click "submit"
Do this to avoid 15 minute call disconnections.
Linksys SPA3102 ATA Config FreePhoneLine.pdf
(360.7 KiB) Downloaded 1577 times
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Re: Linksys SPA3102 Setup Guide

Postby Mango » 01/16/2015

To prevent one-way or no audio with the new FPL switches, set the following on the Voice >> SIP tab:

Handle VIA received: yes
Handle VIA rport: yes
Substitute VIA Addr: yes
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Re: Linksys SPA3102 Setup Guide

Postby Liptonbrisk » 11/28/2017

In addition to what Mango wrote . . .
Having issues with one way-audio or calls going directly to voicemail?
Click ... #p26808549 (same instructions apply)
Do not do step 8 from that link.

Also, navigate to Voice-->SIP-->SIP Timer Values (sec)
Reg Retry Intvl should be 120 seconds ... redentials
Please do not send me emails; I do not work for nor represent Freephoneline or Fongo. Post questions on the forums so that others may learn from responses or assist you. Thank you. If you have an issue with your account or have a billing issue, submit a ticket here: Visit to check FPL/Fongo service status. Freephoneline setup guides can be found at viewforum.php?f=15.
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