MIL-STD-188-176 Asynchronous Transfer Mode ATM, Standardized Profile for No S/S DocumentThe purpose of this military standard MIL-STD is to provide a profile of applicable standards to be used by all Department of Defense DOD activities and associated organizations when acquiring asynchronous transfer mode ATM products, systems, or services.

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MIL-STD-188-176

ATM

End System

ATM UNI

Non-ATM

ATM Switch

P-NNI

ATM Switch

Non-ATM End System

Interface

P-NNI P-NNI

ATM Switch

ATM UNI

FIGURE 3. Base ATM Network.

provided as a continuous bit stream or as protocol data units

(PDU).

4.2.3 Network-to-node interface (NNI) . The interface between ATM switches shall comply with the NNI standards specified in 5.3.4.

4.2.4 Private network-to-node interface (P-NNI) . The P-NNI is the interface between switches in a private (or base) network. Users ensure that the end systems use common interoperable AAL

and higher layers. Detailed requirements for AALs are in section 5.

4.2.5 B-ISDN protocol reference model . ATM end systems and networks are based on the protocol architecture illustrated in

the B-ISDN protocol reference model, Figure 4. The protocol reference model is divided into multiple planes and multiple layers.

4.2.5.1 Planes structure . The B-ISDN reference model consists of the following planes: user plane, control plane, and management plane.

4.2.5.1.1 User plane . The user plane, with its layered structure, provides for user information transfer, along with associated controls (such as flow control, and recovery from errors). The layered structure consists of higher layers, AAL, ATM, and physical layers. The higher layers in the user plane are the responsibility of the end users.