CGN3 (Rogers Advanced WiFi Modem) "VoIP phone issue

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Resident Expert
Resident Expert
Posts: 6,987

Re: CGN3 (Rogers Advanced WiFi Modem) "VoIP phone issue

Yup, ditto.  Yet another confirmation that the SIP/ALG setting on the Hitron modem requires disabling for the VOIP phone to function properly.  And yet, customers have to fight with tech support, again and again.  Glad to see that its working as it should be 🙂

 

The only problem now is that a modem reset will require you to send a pm to @CommunityHelps to disable the SIP/ALG setting again.  To possibly avoid that, do the following:

 

1.  Login into the modem,

2.  Navigate to the ADMIN..... BACKUP page.

3.  Run the Backup function and store the backup configuration file somewhere on your pc.

 

If you ever have to reset the modem, return to the ADMIN.... BACKUP page, run the Restore function using the configuration file that you have just created and then reboot the modem.  Hopefully that also restores any parameters set by @CommunityHelps, which you are unable to accomplish from the user interface.



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I've Been Here Awhile
Posts: 2

Re: CGN3 (Rogers Advanced WiFi Modem) "VoIP phone issue

I had SIP ALG disabled about a week ago and voip phone worked well until today. I tried rebooting the modem and ATA device several times and doublechecked settings and everything was fine but I still could not get voip working for hours. It looks like my rocket wifi modem got the SIP ALG enabled again somehow.  After I restored the previously saved settings (Admin -> Backup) where SIP ALG was disabled, everything went back to normal right away. Thank you Datalink for the tip. Is there a way to prevent that SIP ALG gets reenabled on it own for the modem?

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Resident Expert
Resident Expert
Posts: 6,987

Re: CGN3 (Rogers Advanced WiFi Modem) "VoIP phone issue

It sounds as if the setting is not stored permanently for some reason.  Did the modem lose power by any chance, even for only a few seconds?  Easy way to find out is to unplug the modem for a brief period, say one minute. Then plug it back in.  See if that has caused the SIP/ALG setting to dump.  If so, my guess is that you've found the culprit.  If not, I would wonder if there is a modem update in progress throughout the network?  I can see that causing some of the settings to revert back to default values.

 

In the event that the power interruption is the cause, only way to prevent that is to run the modem on an uninterruptible power supply.  It doesn't have to be a huge UPS.  Just large enough to get you through the majority of brief power outages. 

 

I'll be interested in what you find, in terms of whether the SIP/ALG isn't being stored properly.  The CGN3ACSMR does have a problem with the indicated wifi mode not matching the actual mode after a power interruption occurs.  The same step, running a backup file should resolve that issue as well I think.  Maybe the SIP/ALG is another problem related to the loss of power.



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I'm Here A Lot
Posts: 5

Re: CGN3 (Rogers Advanced WiFi Modem) "VoIP phone issue

hi everyone

 

i posted in this forum a few months ago and had the issue resolved. ( disable sip/alg on cgn3)

 

since then i have had to change  modems and can confirm i have the CGN3ACSMR with 4.5.8.16

 

called techxpert and they disabled sip/alg and manually opened up ports 5060/5061 to all connections as ip of my laptop is dynamic on my lan. nothing works

 

i am using genband/gencom software. also uninstalled and reinstalled the voip software

 

any further tips on what could be done?

 

 

 

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I Plan to Stick Around
Posts: 13

Re: CGN3 (Rogers Advanced WiFi Modem) "VoIP phone issue

I did the same things suggested in this post, eventually Bridge mode works for me permanently.

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Resident Expert
Resident Expert
Posts: 6,987

Re: CGN3 (Rogers Advanced WiFi Modem) "VoIP phone issue

Assign a static IP address to your laptop or VOIP device using the DHCP reservation function located in the BASIC.... LAN Setup page.  Reboot the modem using the Reboot function located in the ADMIN.... DEVICE RESET page, and then log back into the modem to reset the port forwarding rules to forward the external ports to the internal Static IP address using the same port numbers.  Reboot the modem after the port forwarding rules are reset. 



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I've Been Here Awhile
Posts: 3

Re: CGN3 (Rogers Advanced WiFi Modem) "VoIP phone issue

when i first got rogers internet. i had issue with ip voip phone. i found the solution from here using DMZ and giving ip  192.168.0.11.  today suddenly after 2 years it happend again. at first couldnt figure it out but i went back to my router admin page and under the DMZ TAB  i clicked the connected device. i see unknow device which is my phone and it had 192.168.0.10 instead of 11 so i went back and change my dmz ip to 192.168.0.10. and now it works fine 

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I've Been Here Awhile
Posts: 3

Re: CGN3 (Rogers Advanced WiFi Modem) "VoIP phone issue

yes change your dmz ip to 192.168.0.10
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I Plan to Stick Around
Posts: 12

Re: CGN3 (Rogers Advanced WiFi Modem) "VoIP phone issue

Do you need to call to disable SIP ALG if the modem is in bridged mode? my VOIP works fine but sometimes during mid call I get dead air, the call does not disconnect just dead air on both sides. Hanging up and calling again works, happens to both in/out calls and is totaaly random. 

 

I have the R7000 and do not believe that is the issue.

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Resident Expert
Resident Expert
Posts: 6,987

Re: CGN3 (Rogers Advanced WiFi Modem) "VoIP phone issue

Sounds very strange.  With the modem in Bridge mode, you won't have to worry about the SIP/ALG setting.  Just for interests sake, it would appear that the SIP/ALG setting on Asus routers is mislabelled.  It should actually be an Enable / Disable label on the check box.  For whatever its currently set for on the R7000, try running it in the reverse setting to see if that has a positive or negative impact.  Both the R7000 and Asus routers use Broadcom's chipset, so, there might be possibility of a similar error on the R7000.  This is something that @jimboden figured out one day, running a test with another VOIP user.