Level 1: Cadet

Arcadyan LH1000 - Voip registration issue.

Hi there, 

I have recently been swapped over to a Arcadyan LH1000 smart modem gen 2 and cable adaptor, from my previous CG3100D due to service problems in the area. I am on naked cable, so do not have a copper line or a phone line with Telstra. 


The LH1000 does not seem to support 3rd party VOIP providers, and my gigaset C610A having a "registration at provider failed" due to the Arcadyan LH1000 blocking the SIP traffic.  Did not have this issue previously on the CG3100. 


I have been through the settings on the LH1000, and there does not appear to be a fix.  there is no SIP ALG setting in the firewall, and it will not allow me to port forward port 5060. 

If i plug my IP phone or router directly into the cable adaptor, it registers without an issue, but i loose the mobile network backup that the LH1000 gives me. 


Any suggestions on a fix here 




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Level 24: Supreme Being
Level 24: Supreme Being

Re: Arcadyan LH1000 - Voip registration issue.

Have you tried putting phone in DMZ (Advanced > Firewall > Firewall)?


If that doesn’t work you could buy a second hand Telstra Smart Modem Gen 1.0 (Telstra Gateway Frontier) or Telstra Smart Modem Gen 1.1 (Telstra Smart Modem). I know that VOIP phones work with those modems and I have seen them on sale for as little as $5. Both have 4G backup.

Telstra Smart Modem

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