Is BlackBerry Enterprise Server (BES) required?
Flowfinity Client communicates to IIS hosting Blackbird runtime via one of the three options: BES/MDS, BlackBerry Internet Service, or Direct TCP/IP connectivity. BlackBerry Internet Service and Direct TCP connectivity are subject to availability as defined for BlackBerry services by the carrier operating each particular network. Use of BES/MDS enables secure access to enterprise applications hosted behind the firewall. BlackBerry Internet Service and Direct TCP/IP connectivity provide access to applications deployed on external servers and are useful when BES/MDS is not available.