Zyxel Nr5103EV2. Voip set up Suddenly cannot make outgoing calls.

[heinzbean]

Zyxel Nr5103EV2. My voip set up was working fine . then suddenly i can receive but not make calls .
something has changed in the router settings that are stopping me from making outgoing calls.
I have changed back to my Huawai CPE Pro router i can get everything working correctly so
ruling out Sip-gate , Three, Me its the Zyxel...

[MZone]

Call 333 option 4 option 3 and option 3 to discuss your issue with tech support.