Published
The Low Rate Messaging Service (LRMS), specified in the present document, provides a means for the slow,
acknowledged or unacknowledged, transfer of multimedia message objects, including the Short Message
Service (SMS). It provides both point-to-point and point-to-multipoint messaging. This service may be used for private
and public roaming applications.
The present document defines the requirements on the Physical (PHY), Medium Access Control (MAC), Data Link
Control (DLC) and Network (NWK) layers of DECT. The present document also specifies management entity
requirements and generic interworking conventions, which ensure the efficient use of the DECT spectrum.
The present document further mandates how to implement a GSM like Short Message Service (SMS), Point-to-point
(PTP), which uses a sub-set of the Low Rate Messaging Service (LRMS) mentioned before as a bearer service.
SMS-PTP includes the following two services:
- SMS Mobile Originated (SMS-MO), for transport of short messages from PT to FT;
- SMS Mobile Terminated (SMS-MT), for transport of short messages from FT to PT.
Definition of Point-To-Multipoint (PTM) SMS is outside the scope of the present document.
In order to facilitate re-use of excising GSM Service Centres, the present document applies the upper GSM protocols
up-to and including the GSM SMS-RP protocol. Therefore, interworking functions handling the encapsulation of GSM
SMS-RP messages are specified.
Figure 1.1 shows the protocols defined in the present document.
PHL
MAC
DLC
NWK
LRMS PTP LRMS PTM
MMSP
GSM
SMS
SMS
SMS IWU
or
application
LRMS PTP
IWU or
application
LRMS PTM
IWU or
application
Figure 1.1
ETSI
10 ETSI EN 300 757 V1.5.1 (2004-09)
The SMS or LRMS applications are outside the scope of the present document. So is the network behind the FP. Any
information provided concerning applications or the network behind the FP is provided for informative, descriptive
reasons only.
PUBLISHED
SSH EN 300 757 V1.5.1:2004
60.60
Standard published
Aug 10, 2016
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