If you can hear the phone ringing, but don’t hear anything once you've answered the phone, this may indicate an issue with your router's configuration.
If you're using an GTA Telecom issued-router, all settings have already been properly preconfigured. However, if you're using an GTA Telecom issued router and issues persist, contact us for further assistance.
If you are using a third-party router, you may need to adjust some settings to make it compatible with the phone adapter. While we do not support third-party routers, here are some tips for your reference.
- Change the SPI firewall status to “disable”. It doesn’t always cause the above mentioned issue, but if you encountered this kind of problem, start with this step.
- Some routers have SIP or SIP ALG option, choose to enable SIP, or SIP ALG (application layer gateway), it allows VoIP traffic to pass through firewall.
- If you are familiar with your router configuration, open 5060 port for phone adapter, or put this phone adapter in DMZ.
- If problems persist, try a different router. Some routers such as D-link don't support VoIP phone well.
- If you are using cable Internet, you can bypass the router to do a test by connecting the phone adapter to the cable modem directly, and reboot the modem, then check again. If the problem can be resolved with the hard connection, it indicates am issue with your router. Otherwise, the issue is related to your phone adapter.
- If you checked both connection and settings, but the problem still persists, contact us for further assistance.