Grandstream HT814 extension registration issues

[Ben Wykeham]

Hey,
I have a Grandstream HT814 running on the same network as my 3cx server. I have followed the guide here https://www.3cx.com/voip-gateways/grandstream-ht-fxs/ to configure the device however when uploading the confile the device loses its IP address and we dont have DHCP on this network.
I have tried to enter the details manually into the device and I seem to be able to call out using a phone connected to the HT814 however when its answered the called party is placed on hold instantly. I have tried dialing internal extensions and they just dont connect. Dialing the extension from an internal extension gives me a recorded message "End destination cannot be reached".
No logs in the 3cx server as far as I can tell.
The status page of the HT814 states that the port is Not Registered.

I am guessing there is a switch or bit of config I have not selected however I cannot figure out where that is! In the Profile section of the HT814 I have selected the Sip Registration to Yes.

 

[eddv123]

Try using a DHCP server you can use an open source one if your router firewall does not support this feature.

These devices also have a CLI you can access via putty, have you tried that?

 

[leejor]

The device internal dialplan may have something to do with not being able to call other extensions. You should be seeing Activity Logs for those calls, at least. If you don't see any registration attempts, then the devices IP may be blacklisted, if it tried too many times, and failed. Check the Blacklist, and whitelist it. Onec you can see aregistration attemp, even if it does fail, you will have some cles about why it is failing.

 

[eddv123]

then the devices IP may be blacklisted

Good point, this can occur with PSTN gateways. Although in my experience I am not sure it would stop access into the gateway device.

 

[leejor]

Although in my experience I am not sure it would stop access into the gateway device.

It won't stop "access", if by that you mean being able to log in to the GUI, but, it will prevent calls from reaching it, as it will be unable to register.

Dialing the extension from an internal extension gives me a recorded message "End destination cannot be reached".