Rohde & Schwarz News Magazine

214 | Wireless

Testing IP-based wireless voice services

Mobile networks from the fourth generation (LTE / LTE-A) on use the Internet protocol for all services. Another infrastructure is required in addition to IP to ensure that traditional services such as voice communications continue to function. A 4G device only becomes a “phone” with the help of the IP multimedia subsystem. The R&S®CMW500 wideband radio communication tester can solve a variety of test-related problems.

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