There's another STUN server that resolves to the same IP

[samcharles]

Hi Guys, anyone came across this before? 80% no audio, can you help?

 

[Evolute IT]

Hi Guys, anyone came across this before? 80% no audio, can you help?

Is SIP ALG disabled? It should be. Try the firewall test and see the results. Are all RTP ports forwarded if behind NAT? Is QoS configured properly?

Also, more information like the PBX version would help. Phone models and firmware versions, what templates you are using, how are the phone connected to the PBX (local [includes VPN], SBC or STUN).

 

[samcharles]

They are Yealink T46s and T42s on Stun. The customer just moved into a serviced office. The services office has its own IP phones (2x Cisco) PBX Version 16. SIP ALG is disabled from running a firewall test but testing ports [10600..10998]... failed but the rest passed. We don't have control of this network we can only request. The 2 x Cisco phones from the serviced office works on the same network

• testing port 10600... full cone test failed (How to resolve?)
• testing port 10602... full cone test failed (How to resolve?)
• testing port 10604... full cone test failed (How to resolve?)
• testing port 10606... full cone test failed (How to resolve?)
• testing port 10608... full cone test failed (How to resolve?)
• testing port 10610... full cone test failed (How to resolve?)
• testing port 10612... full cone test failed (How to resolve?)
• testing port 10614... full cone test failed (How to resolve?)
• testing port 10616... full cone test failed (How to resolve?)
• testing port 10618... full cone test failed (How to resolve?)
• testing port 10620... full cone test failed (How to resolve?)
• testing port 10622... full cone test failed (How to resolve?)
• testing port 10624... full cone test failed (How to resolve?)
• testing port 10626... full cone test failed (How to resolve?)
• testing port 10628... full cone test failed (How to resolve?)
• testing port 10630... full cone test failed (How to resolve?)
• testing port 10632... full cone test failed (How to resolve?)
• testing port 10634... full cone test failed (How to resolve?)
• testing port 10636... full cone test failed (How to resolve?)
• testing port 10638... full cone test failed (How to resolve?)
• testing port 10640... full cone test failed (How to resolve?)
• testing port 10642... full cone test failed (How to resolve?)
• testing port 10644... full cone test failed (How to resolve?)
• testing port 10646... full cone test failed (How to resolve?)
• testing port 10648... full cone test failed (How to resolve?)
• testing port 10650... full cone test failed (How to resolve?)
• testing port 10652... full cone test failed (How to resolve?)
• testing port 10654... full cone test failed (How to resolve?)
• testing port 10656... full cone test failed (How to resolve?)
• testing port 10658... full cone test failed (How to resolve?)
• testing port 10660... full cone test failed (How to resolve?)
• testing port 10662... full cone test failed (How to resolve?)
• testing port 10664... full cone test failed (How to resolve?)
• testing port 10666... full cone test failed (How to resolve?)
• testing port 10668... full cone test failed (How to resolve?)
• testing port 10670... full cone test failed (How to resolve?)
• testing port 10672... full cone test failed (How to resolve?)
• testing port 10674... full cone test failed (How to resolve?)
• testing port 10676... full cone test failed (How to resolve?)
• testing port 10678... full cone test failed (How to resolve?)
• testing port 10680... full cone test failed (How to resolve?)
• testing port 10682... full cone test failed (How to resolve?)
• testing port 10684... full cone test failed (How to resolve?)
• testing port 10686... full cone test failed (How to resolve?)
• testing port 10688... full cone test failed (How to resolve?)
• testing port 10690... full cone test failed (How to resolve?)
• testing port 10692... full cone test failed (How to resolve?)
• testing port 10694... full cone test failed (How to resolve?)
• testing port 10696... full cone test failed (How to resolve?)
• testing port 10698... full cone test failed (How to resolve?)
• testing port 10700... full cone test failed (How to resolve?)

 

[YiannisH_3CX]

If all other ports pass but these failed that means that these ports are not forwarded correctly. You can find all necessary ports here: https://www.3cx.com/docs/ports/