T-Mobile International AG is a German holding company for Deutsche Telekom AG's various mobile communications subsidiaries outside Germany. Globally, T-Mobile International subsidiaries have a combined total of approximately 230 million subscribers.

Scope of project: delivery of SIP interconnect solution between T-MOBILE mobile core exchanges MSS NSN R4, interconnect partners and 3GPP IMS T-MOBILE Network

We provided technical consultancy for the end to end solution with a full spectrum of professional services from architecture, HLD, LLD, Interoperability tests of NSN R4 MGCF, deployment of a few Oracle 4500 cluster and complete configuration.

We discovered 23 zero bugs related to the SIP protocol in NSN R4 MGCF and one in Oracle SBC.

Project was delivery in time. T-MOBILE also saved significant amount of money as we delivered complete configuration and deployment which would be more expensive from traditional big telco vendors. T-MOBILE also benefited from independent Inter Operability Test as Nokia and Oracle must delivered a new software version to resolved bugs.