MSISDN Assignment and Release (FT-1009.008)
About this document
Scope
This document provides background information as well as a functional description of the FT-1009.008 MSISDN Assignment and Release standard feature. The described feature is supported from the release version 4.0 onwards.
Note
MSISDN Assignment and Release is a standard feature and does not require a special license.
This feature is part of the SIM Lifecycle Management functionality with number FN-1009.
Feature Availability
Feature Version | Avalaible from | Summary of changes |
---|---|---|
v1 | CMP Release 4.0 | Initial release |
Feature overview
Goals
The aim of the MSISDN Assignment and Release feature is to allow Service Providers to assign and release MSISDNs to SIM Cards in the most fitting manner for them.
Functionality of the feature
MSISDN Assignment
CMP provides multiple MSISDN assignment options:
MSISDN is assigned and uploaded on SIM Upload
If the MSISDN is loaded into CMP with the ICCID and the IMSI in the upload file, it will never be removed from the SIM Card.
MSISDN is assigned automatically by CMP at SIM Activation (i.e. when SIM moves to In Testing or In Billing)
This is determined by a flag in the SIM Product.
The MSISDN is set against the SIM Card once the SIM is in Resource Status ASSIGNED and moved out of Billing Status Customer Inventory.
No MSISDN is assigned
This is determined by a flag in the SIM Product.
MSISDN is never assigned.
The following diagram describes the available MSISDN assignment use cases.

MSISDN Release Behavior
The MSISDN Release Behavior is configurable per CMP instance to support the different requirements of the Service Providers. The configuration is done at installation and cannot be changed via GUI or API.
CMP provides the following MSISDN release options:
No change to the MSISDN assignment
The MSISDN assigned to the SIM Card is untouched when the SIM is retired.
Release MSISDN
The MSISDN assigned to the SIM Card is released and replaced (overwritten) by a dummy MSISDN when the SIM is retired.
Retired SIM Cards with a dummy MSISDN assigned are displayed without an MSISDN.
If a retired SIM is re-activated, it will not get the same MSISDN it has released but the next free dialable MSISDN.