I have just installed the VitalPBX from DigitalOcean Marketplace.
PBX extensions are not able to receive the call. Error: 488 not acceptable
Client: Grandstream Wave
Server Platform: DigitalOcean Singapore
Extension Type: SIP
Change Default Port to 15060 instead of 5060 from Setting->Telephone Settings->SIP Setting->Bind IP 0.0.0.0 Port 15060
Extension: A make a call request to Ext B
Ext B press the "Accept" Button.
Ext A ring status changed to talking and times count started.
But Ext B still see ringing.. and few times later error 488 not acceptable
Check the codecs you are using for both devices, or check them globally in the SIP Settings
I have added all codec from SIP Settings but still It is not working.
Did you enable the NAT settings on SIP Settings?
What kind of phones you are using?
NAT is enabled properly. I can use other clients without any issue like Zoiper, Grandstream ATA and SIPML5 without any issue.
Grandstream wave (android app) is the phone which is not working.
I think the latest version of gswave try to use ipv6 instead of ipv4.
In GS Wave did you specify :PORT after the hostname? Just checking all boxes here.