## HTTP Server

Avaya IP Telephones support an HTTP server as specified in the IETF Documents listed in Related Documentation for HTTP 1.0, HTTP 1.1, and for an HTTP client. The HTTP server uses TCP as a transport-layer protocol, and supports only one connection (socket) at a time. The HTTP client uses TCP or TLS/SSL over TCP as a transport-layer protocol.

- The Push Agent will activate the receive port 80 for the HTTP server if:

- the phone is properly registered with a call server, and
- the TPSLIST contains at least one non-null value, and
- the URI for a transmitted message begins with http://.

- The Push Agent will activate the receive port 443 for the HTTPS server if:

- the phone is properly registered with a call server, and
- the TPSLIST contains at least one non-null value, and
- the URI for a transmitted message begins with https://.

- The Push Agent only listens to port 80 for all incoming requests.