- Alternative and probably nonstandard form of UMTS (Universal Mobile Telecommunications System).
2002, Madhushree Ganguli, Getting Started with Bluetooth:
- It is inevitable that the introduction of GPRS and UMTS will have a tremendous impact on Bluetooth. [...] Figure 10-11 illustrates the projected timeline for the rollout of Bluetooth, GPRS, and UTMS.
2004, Jonathan P. Castro, All IP in 3G CDMA Networks:
- In the following we cover the radio-access domain, which in part will cover UTMS Mobility Management (UMM) and UMTS call control to complete the context of inter-operability between 2G and 3G systems, i.e. GSM and UMTS.
- 2005, Heikki Kaaranen et al., UMTS Networks 
- Security is a fundamental requirement in every part of the UTMS network and the IMS is not an exception. [...] The security issues in the UMTS environment are described in detail in Chapter 9.