Competition energizes the business. The standard features of the new UMTS networks are leading to substantial improvements in GSM and (E)GPRS networks. Dual transfer mode (DTM) is the keyword here. This new method will also make it possible in GSM networks to perform functions such as receiving a call or sending an SMS while receiving e-mails. The implementation of DTM in the R&S CRTU-G will offer protocol stack developers a more powerful tool.
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