<p><span class=&quot;default_body&quot;>The VoLGA Forum was initiated to specify and promote an approach for extending traditional GSM and UMTS circuit-switched services over LTE access networks. Based on the existing 3GPP Generic Access Network (GAN) standard, VoLGA technology will enable mobile subscribers to receive a consistent set of voice, SMS (and other circuit-switched) services as they transition between GSM, UMTS and LTE access networks. <br />
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