07-20-2020 11:47 AM - edited 08-02-2020 11:20 PM
In order for my VoIP to work, I have to have the SIP Gateway checked under the Firewall tab. However, if I make ANY change to the router's configuration, I then have problems with the phones. We can hear the person calling in, but they can't hear us. From what I understand, that's the exact opposite of a normal SIP issue. However, unchecking SIP Gateway, clicking Apply, checking SIP Gateway, and again clicking Apply (i.e. disable then re-enable SIP Gateway) solves the problem every time. I just updated to v1.0.03.18 of the router's firmware and the problem still exists. It's easy enough to work around, if I make ANY change, cycle the SIP Gateway [the problem is REMEMBER to cycle the SIP Gateway :-)], but that seems to be a bit ridiculous.
This time, the change was the update to the xx.18 firmware last night. The unit rebooted, as it should have after the update, but this morning, the phone problem described above was back. Cycling the SIP Gateway solved the problem, as usual.