Editing DECT (section)

===Network layer===
The DECT [[network layer]] always contains the following protocol entities:
* Call Control (CC)
* Mobility Management (MM)

Optionally it may also contain others:
* Call Independent Supplementary Services (CISS)
* Connection Oriented Message Service (COMS)
* Connectionless Message Service (CLMS)

All these communicate through a Link Control Entity (LCE).

The call control protocol is derived from [[ISDN]] [[DSS1]], which is a [[Q.931]]-derived protocol. Many DECT-specific changes have been made.{{Specify|date=June 2010}}

The mobility management protocol includes the management of identities, authentication, location updating, on-air subscription and key allocation. It includes many elements similar to the GSM protocol, but also includes elements unique to DECT.

Unlike the GSM protocol, the DECT network specifications do not define cross-linkages between the operation of the entities (for example, Mobility Management and Call Control). The architecture presumes that such linkages will be designed into the interworking unit that connects the DECT access network to whatever mobility-enabled fixed network is involved. By keeping the entities separate, the handset is capable of responding to any combination of entity traffic, and this creates great flexibility in fixed network design without breaking full interoperability.

DECT [[Generic access profile|GAP]] is an interoperability profile for DECT. The intent is that two different products from different manufacturers that both conform not only to the DECT standard, but also to the GAP profile defined within the DECT standard, are able to interoperate for basic calling. The DECT standard includes full testing suites for GAP, and GAP products on the market from different manufacturers are in practice interoperable for the basic functions.