Eventually these systems too could link different organizations as long as they ran the same email system and proprietary protocol.

However, it quickly became clear that the number of proprietary protocols was becoming unmanageable.

Others, like the Xbox 360, use proprietary wireless protocols.

In telecommunications, a proprietary protocol is a communications protocol owned by a single organization or individual.

This is a proprietary protocol and very little is known about its operation.

In contrast to other proprietary protocols, the protocol is open so that devices from independent vendors can be used.

A software radio proprietary protocol is used to directly drive a small coil.

Some of these implementations still exist today, but they are now considered as proprietary protocol.

These have not worked out, so each still uses its own proprietary protocol.

Why must apple create a new proprietary protocol to discover and use printers?