AT&T & Verizon Work Toward VoLTE Interoperability
Verizon and AT&T are working to enable Voice over LTE interoperability, reports Fierce Wireless. The two carriers said they are going to enable VoLTE-to-VoLTE connections in 2015. Voice over LTE (VoLTE) was devised to standardise a method for transferring voice over LTE data networks.
According to a Verizon blog post, engineers from both companies will start with lab testing and then move to field trials next year. Verizon said customers will have a seamless experience making VoLTE HD Voice calls between the two networks as well as other Rich Communications Services (RCS) such as video calls, rich messaging and more.
T-Mobile, meanwhile, has VoLTE available in more than a dozen cities (with the proper phone), and has been testing interoperability, with interop agreements with VerizonWireless and Sprint since May, notes John Legere.
AT&T introduced VoLTE services in its initial markets earlier this year,
and will continue to expand to more devices and more markets across the
United States. “Interoperability of VoLTE between wireless carriers is
crucial to a positive customer experience,” said Krish Prabhu, president, AT&T Labs and Chief Technology Officer, AT&T.
Currently, to experience Verizon’s VoLTE service both parties on a call need to be using a VoLTE-enabled Verizon smartphone. AT&T’s VoLTE-enabled HD Voice service lets customers only make HD Voice calls with other AT&T customers using AT&T HD Voice-capable devices within AT&T HD Voice coverage areas.
An additional requirement for VoLTE enabled networks is to have a means to handing back to circuit switched legacy networks in a seamless manner, while only having one transmitting radio in the handset to preserve battery life. A system known as Single Radio Voice Call Continuity (SRVCC) is required for this. Handover from LTE to the legacy network is required when the user moves out of the LTE coverage area.
The benefit to wireless operators is more-efficient use of their network resources, explains C/Net’s Maggie Reardon. VoLTE benefits for consumers include faster call setup times (twice as fast as a non-VoLTE call setup), LTE data speeds while you are on a call, and HD Voice service with greater call quality.
source : dailywireless.org
According to a Verizon blog post, engineers from both companies will start with lab testing and then move to field trials next year. Verizon said customers will have a seamless experience making VoLTE HD Voice calls between the two networks as well as other Rich Communications Services (RCS) such as video calls, rich messaging and more.
T-Mobile, meanwhile, has VoLTE available in more than a dozen cities (with the proper phone), and has been testing interoperability, with interop agreements with VerizonWireless and Sprint since May, notes John Legere.
AT&T introduced VoLTE services in its initial markets earlier this year,
and will continue to expand to more devices and more markets across the
United States. “Interoperability of VoLTE between wireless carriers is
crucial to a positive customer experience,” said Krish Prabhu, president, AT&T Labs and Chief Technology Officer, AT&T. Currently, to experience Verizon’s VoLTE service both parties on a call need to be using a VoLTE-enabled Verizon smartphone. AT&T’s VoLTE-enabled HD Voice service lets customers only make HD Voice calls with other AT&T customers using AT&T HD Voice-capable devices within AT&T HD Voice coverage areas.
An additional requirement for VoLTE enabled networks is to have a means to handing back to circuit switched legacy networks in a seamless manner, while only having one transmitting radio in the handset to preserve battery life. A system known as Single Radio Voice Call Continuity (SRVCC) is required for this. Handover from LTE to the legacy network is required when the user moves out of the LTE coverage area.
The benefit to wireless operators is more-efficient use of their network resources, explains C/Net’s Maggie Reardon. VoLTE benefits for consumers include faster call setup times (twice as fast as a non-VoLTE call setup), LTE data speeds while you are on a call, and HD Voice service with greater call quality.
source : dailywireless.org
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