Note: This study was conducted during mid 2005.

The company is a medium sized private limited organisation in the tourism sector based in Cochin. At present, the company has five old provider landlines and fifty mobile phones. The old provider landlines are connected to an 832 EPABX system.

Customer has subscribed for three new provider fixed lines. During installation, the customer upgrades the EPABX system and connects two of the new provider lines to the EPABX. However, none of the old provider lines are disconnected and the new provider lines are never publicised.

When Xtend CNA is used, the old provider lines can be made incoming only as no outgoing calls are possible through this line. Also all incoming and outgoing calls that went through old provider now proceed via new provider. This means that the revenue for new provider doubles as a result of customer switchover.

Note: Case studies are based on the new provider fixed line as billing data for the past four months or more was required to perform a reliable study.