Hi Arda,
In order to handle the presence traffic, OpenSIPS must support the "xxx"
presence event - so, you need an opensips presence module to support the
"xxx" event. You need a "event" specific handling module, as the content
of the PUBLISH/NOTIFY requests 100% depends (as format and managin
OpenSIPS prints this error when SUBSCRIBE message comes to OpenSIPS presence
server from the desk-phone of a vendor.
ERROR:presence:handle_subscribe: unrecognized value [xxx] in Event header
INFO:presence:handle_subscribe: Missing or unsupported event header field value
SIP response is generated
