'A Deutsche Telekom spokesman said the company has to make "significant investment" in its networks and the number of available Internet protocol, or IP, addressees to offer its customers the option to use VoIP within its mobile network in Germany. However, the spokesman declined to elaborate further on the details of this necessary investment.'
Ironically, it would seem, one of the reasons that operators are moving towards all-IP networks and new generations of technology such as LTE is that this will reduce the costs of carrying voice calls. In this instance it appears that either the costs of carrying VoIP are higher, or that T-mo is looking to recoup revenues it might have received had the calls been made over its GSM network.
