This part of the IEC 62676 series specifies management systems interfaces and mechanism for remote operational access to physical security devices such as video surveillance devices and systems. For video surveillance, the use cases focus on accessing live video and retrieving recordings. The mechanism defined in this specification are not restricted to surveillance applications but also cover remote access to security systems and electronic access control systems. Configuration of devices and management systems is out of scope of this specification. Clause 4 introduces to remote management access. Clause 5 defines a set of requirements that the protocol needs to fulfil. Clause 6 extends the token-based resource-addressing scheme of the underlying specification IEC 60839-11-31. Clause 7 describes how to retrieve information about remote resources. Clause 8 defines how to connect to devices that are not directly reachable because they are e.g. located behind firewalls.