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Because 4G LTE is a data-transmitting network, when it launched, Verizon customers' voice calls were still carried over the company's CDMA2000 network, [63] which was developed for 3G cellphones. In September 2014, Verizon launched voice over LTE (VoLTE) ; [ 64 ] this allowed voice calls to transmit via the data-only LTE network.
Internet Call Router (ICR) - Also called the Internet Offload, the ICR is a new network element used in the “post-switch" off-load architecture. Switch - An SEP that is equipped to switch end user voice or data calls. Combined Node (CN) – An SP that combines the functions of two or more types of SPs.
Wi-Fi calling, also called VoWiFi, [1] refers to mobile phone voice calls and data that are made over IP networks using Wi-Fi, instead of the cell towers provided by cellular networks. [2] Using this feature, compatible handsets are able to route regular cellular calls through a wireless LAN (Wi-Fi) network with broadband Internet , while ...
Operates on Verizon's native 4G/LTE network and WiFi calling (no 3G – Verizon will shut this down at the end of 2020 anyway or roaming- some reports of LTEiRA roaming with talk and text). No toll-free customer service #; service provided via in-app chat, text, Facebook, or Twitter; callbacks by request.
VoLTE calling. Voice over Long-Term Evolution (acronym VoLTE) is an LTE high-speed wireless communication standard for voice calls and SMS using mobile phones and data terminals. [1] [2] VoLTE has up to three times more voice [3] and data capacity than older 3G UMTS and up to six times more than 2G GSM.
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SBCs are inserted into the signaling and/or media paths between calling and called parties in a VoIP call, predominantly those using the Session Initiation Protocol (SIP), H.323, and MGCP call-signaling protocols. In many cases the SBC hides the network topology and protects the service provider or enterprise packet networks.
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