Based on its name and enumeration, this value reports which protocol, undefined, hose, or telnet, is being used to carry the session data on this dial-out interface; the source MIB provides no description text for this object. Admins would check it to confirm whether a dial-out session is being tunneled via Telnet or the vendor-specific 'hose' protocol before troubleshooting connectivity. As an illustrative example, a returned value of telnet(3) would indicate this dial-out interface's session data is being carried over a Telnet connection.