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Terminal Requirements
The documents in this section provides details of the terminal requirements for different protocols in IMPACT.
LWM2M Terminal Requirements
This document provides information on the basic requirements to implement the Lightweight M2M (LWM2M) Device Management protocol within a device.
Binding modes
UQS mode

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Terminal Requirements
The documents in this section provides details of the terminal requirements for different protocols in IMPACT.
- MQTT Terminal Requirements
  This document provides information on basic requirements to implement the MQTT protocol within a device to interoperate with IMPACT for IOT.
- LWM2M Terminal Requirements
  This document provides information on the basic requirements to implement the Lightweight M2M (LWM2M) Device Management protocol within a device.

UQS mode

The UQS mode is like UQ mode where the server queues all requests that are bound towards the client in an internal queue. In addition to queuing the request, the server will send an SMS to the client using the MSISDN provided by the client. It awaits client connection and when the client connects, these requests will be sent to the client over UDP.

The UQS binding mode is suitable for devices that support Cellular notification via SMS with a cellular subscription that has an MSISDN. For 4G devices this may not be always be the case.

The below sequence diagram shows the command flow in the UQS mode: