Tekelec has acquired iptelorg GmbH, a developer of Session Initiation Protocol (SIP) routing software, for approximately $7 million in cash, plus $4 million of Tekelec shares, which are subject to repurchase for a nominal amount if certain of the former iptelorg shareholders terminate their employment with Tekelec within four years. Tekelec said the acquisition would extend its IP Multimedia Subsystem (IMS) capabilities.iptelorg, which is based in based in Germany and the Czech Republic, offers a SIP Express Router is used in commercial deployments,...