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# UCP Access

# Description UCP Access

This service allows access to the UCP (Universal Computer Protocol) interface of the eCall system to send SMS messages.

This document is intended for eCall users who want to send SMS messages to recipients using the UCP protocol. It describes the eCall UCP interface between eCall and external systems. The interface is based on the standard UCP protocol.

**Core functionalities**

The interface offers the following functions:

* Sending single or multi-page SMS messages:
* Reception of the delivery receipts
* Support for GSM 7-bit alphabet and parts of the Unicode character set

**Requirements**

To use the UCP interface the following requirements apply:

* An active eCall account is required
* The UCP access must be activated for this account.

[Description UCP access | PDF 504 KB](https://ecall-messaging.com/wp-content/uploads/2020/12/eCall_Interface-description_UCP-2.1_EN.pdf)
[Specification UCP interface| PDF 664 KB](https://ecall-messaging.com/wp-content/uploads/2020/11/EMI-UCP-Interface-Specification.pdf)