IF YOU CALL VIBER OVER LTE 64 BITS
IF YOU CALL VIBER OVER LTE FREE

If you know that your phone is able to work abroad, you can keep using your local SIM card as you normally would at home. The first thing you should do before traveling abroad is to check whether your mobile service provider allows you to make international calls and whether your contract covers the amount of data and minutes you’ll need to use while you’re away.

Find out Whether Your Mobile Service Provider Is Available Abroad For example, you can choose whether you need a 30-Day Calling Plan or a Monthly Subscription Plan if you travel abroad frequently. Call any number in the world with Viber Out’s low calling rates and choose the best calling plan for your specific needs. Always make sure that you preload your Viber Out account in advance with credit so that you’re always able to use your phone to call anyone, anywhere – even if you don’t have an internet connection. Viber Out is the best solution for when you need to call a landline, someone who doesn’t have Viber or someone who doesn’t have an internet connection. Use Viber out for Calling Landlines and When There’s No Internet Connection

IF YOU CALL VIBER OVER LTE FREE

All Viber-to-Viber communication is absolutely free as long as your loved ones are also Viber users and you both have an internet connection. The easiest way to contact your friends and family abroad is through Viber. Here are some things you should be aware of: Dos Enjoy Making Free Viber-To-Viber Calls When choosing the best way to make an international call, you want to make sure you’ve taken into account all the dos and don’ts. Whether you’re abroad or need to call a landline from your mobile, Viber Out provides you with the cheapest and quickest option to do so, allowing you to contact your family and friends abroad easily. Remember the times when you had to use your landline and a “cheap international calling rate number” to call abroad? Well, thanks to today’s rates on Viber’s low-cost calling service, Viber Out, those calling tricks are a thing of the past.

IF YOU CALL VIBER OVER LTE 64 BITS

The SID frame size is fixed to 56 bits for AMR speech codecs and 64 bits for EVS speech codecs.Making international calls hasn’t always been easy. Silent Periods: it means the UE doesn’t have any voice packets, in this period UE transmits or receives silence insertion descriptor (SID) frames. Size of voice data packet depends on used speech coding rate.

Voice packets are transmitted every 20 ms. Talk Spurts: during this period the UE sends or receive voice data packets. This negotiation process is visible to the eNodeB. The use of AMR or EVS is negotiated between UEs and IMS. It is classified into AMR wideband (AMR-WB) and AMR narrowband (AMR-NB).ĮVS: it allows to have HD VoLTE speech codec, and classified into EVS narrowband, EVS wideband, EVS superwideband, and EVS fullband. VoLTE uses Adaptive Multi-Rate (AMR) and Enhanced Voice Services (EVS) speech codecs:ĪMR: this speech codec is widely used in UTRAN and GERAN networks. If a mobile operator wants to launch VoLTE service, then it needs to deploy IMS (IP Multimedia Subsystem) network with LTE. The VoLTE call will make handover to PS domain of UTRAN or GERAN if VoIP service is supported in target networks. This handover type is called SRVCC, with longer name Single Radio Voice Call Continuity.Ģ. The VoLTE call will make handover to CS domain of UTRAN or GERAN if VoIP service is not supported in target networks. It includes WhatsApp, Viber, Skype and etc…We should not compare these applications with VoLTE, because VoLTE has large-scale resources.Ī question: the user is using VoLTE call in LTE network and came to the LTE network edge, what will happen in this situation? Ok, there are two solutions:ġ. VoLTE is also known as VoIP (Voice over Internet Protocol), but VoIP is not only VoLTE. No setup delay because of CSFallback, no inter-system transition issues because of legacy networks and HD Voice service can be used with EVS codecs (Enhanced Voice Services). It is expensive solution to support voice calls in LTE but better solution. If an IMS network is deployed with LTE, then no need to use CSFallback (if all UE support VoLTE in the network). It may cause call setup delay, sometimes blocked calls or other undesired problem. Legacy networks such as UMTS, GSM or CDMA are used for CSFallback, so the UE needs to go back from LTE to one of the mentioned legacy networks then start a voice call. Typically the mobile operators are using CSFallback feature for voice calls in new deployed LTE networks which is cheaper solution than VoLTE. Voice over Long Term Evolution, Voice over LTE or with abbreviated version VoLTE. VoLTE Radio Resource and Quality of Service Class Identifier

If you call viber over lte