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Cannot hear anything on incoming calls

PostPosted: 09/08/2018
by mmcgarri
Everything has been working fine with my HT502 and Rogers. CGN3 modem, for years.

I just upgraded my Rogers internet package and therefore needed a new Rogers modem. It is a CODA-4582.

However, since upgrading I cannot get me HT502/FPL working. I have be able to get it to the point where Outgoing calls are fine , but incoming calls can only be heard from one side... the incoming side.

I have
- disabled SIP ALG in the modem settings
- tried port range forwarding
- Tried enabling Stun server
- configuring for voip4.freephoneline.ca:6060

Nothing seems to make any difference.

Any help is appreciated !

Re: Cannot hear anything on incoming calls

PostPosted: 09/09/2018
by Liptonbrisk
mmcgarri wrote:I have
- disabled SIP ALG in the modem settings


1) I see you have a Linksys router. You should also try disabling SIP ALG in it: https://www.youtube.com/watch?v=sPnknsUMdIc.
Ensure your ATA is connected to your Linksys router. Connect all devices to your linksys router.


2) Enable bridge mode in the CODA-4852:
Image
CODA-4852 instructions are the same as CGN3.

Doing this bypasses the firewall and all router features in the CODA-4582, including SIP ALG (which is a good thing), so make sure you're connecting all LAN devices to your Linksys router so that they're protected.




tried port range forwarding


Port forwarding is a security risk and shouldn't be required. Only port forward when all else fails.
Disable all port forwarding.

Tried enabling Stun server


That shouldn't be necessary either. Using STUN is an additional point of failure in the event the STUN server drops.


I realize the following PDF guide is for a different Grandstream ATA model, but some settings should be similar. For those that are, check to ensure that your settings match the ones listed in this PDF guide:
viewtopic.php?f=15&t=18839#p74000.

Remember that proper device reboot order is always modem-->router (wait for Wi-Fi SSIDs to populate first)-->ATA

Re: Cannot hear anything on incoming calls

PostPosted: 09/09/2018
by mmcgarri
So it appears to have been fixed by changing to voip3.freephoneline.ca.

But thank you for your help. If it acts up again I will troubleshoot further using the steps you provided.

Re: Cannot hear anything on incoming calls

PostPosted: 09/09/2018
by Liptonbrisk
mmcgarri wrote:So it appears to have been fixed by changing to voip3.freephoneline.ca.


Remaining on voip3.freephoneline.ca may get your account suspended. Officially, the word used is "will" and not "may."

https://support.freephoneline.ca/hc/en- ... redentials

"Use of Fongo SIP Servers that are not listed in this document will result in your account being suspended."


voip3.freephoneline.ca is intended for testing purposes only--or for those who receive explicit permission to use it. Using it for an extended period may get your account banned. However, if using voip3.freephoneline.ca does work, you should open up a ticket with support and let them know that you can't get two-way audio any other way: https://support.fongo.com/hc/en-us/requests/new. Request a "forced registration" in your ticket.

If no responds to your support ticket, provide the ticket number in a private message to Fongo Support: http://forum.fongo.com/ucp.php?i=pm&mode=compose&u=7852

The only Proxy servers customers are allowed to use are voip.freephoneline.ca, voip2.freephoneline.ca, or voip4.freephoneline.ca:6060 (which is used to circumvent SIP ALG issues).