SSH EN 301 239 V1.1.3:1998

Digital Enhanced Cordless Telecommunications (DECT); Data Services Profile (DSP); Isochronous data bearer services for closed user groups (service type D, mobility class 1)

Scope

The present document specifies a profile for Digital Enhanced Cordless Telecommunications (DECT) systems
conforming to EN 300 175, parts 1 to 7 [1] - [7]. It is part of a family of profiles aimed at the general connection of
terminals supporting non-voice services to a fixed infra-structure, private and public.
The type D service, mobility class 1, as described in the ETR 185 [9], supports Isochronous Data Bearer Services
(IDBSs) for Closed User Groups (CUGs) and is suitable for transparent transfer of isochronous data streams. It is
intended for use in non-public applications. Video services and secure telephony services (end-to-end encrypted) over
external networks can be considered as applications of IDBS.
Phase 1 of the present document defines an unprotected service offering an unrestricted digital 32 kbit/s data bearer
service and an unprotected single bearer, multi-rate, rate adaptation service to interwork to synchronous ITU-T
Recommendations V.series services.
Further phases of this profile may additionally provide multiple rate, multi-bearer support and error correction capability
for services and applications requiring higher rates and high quality isochronous data transmission.
The present document specifies the requirements on the Physical (PHL) layer, Medium Access Control (MAC) layer,
Data Link Control (DLC) layer and Network (NWK) layer of DECT. The standard also specifies Management Entity
(ME) requirements and generic Interworking Conventions (IC).