VoLTE and international calls

[Hal65]

Does VoLTE provide any benefit over a 3G network for international calls? I have AIS in Thailand and my destination is the US (I intend to use an app that gives me a USA phone number as well). 

 

Thanks

[Hal65]

PS: I will be calling landlines and mobile phones in the US. I'm not sure but I think VoLTE won't have any benefit in this case as it sounds like the receiver must also be VoTLE enabled for it to work.

[patyh]

On 10/6/2016 at 5:57 PM, Hal65 said:

PS: I will be calling landlines and mobile phones in the US. I'm not sure but I think VoLTE won't have any benefit in this case as it sounds like the receiver must also be VoTLE enabled for it to work.

 

Let's start with the basic, 

 

VoLTE only works on a 4G LTE network, so not going to happen over a 3G network. VoLTE is supposed to provide clearer phone calls as well as faster connection time compare to traditional 3G/2G. 

 

And no, both side need not be using VoLTE to hear a difference(if any). Just you using VoLTE may make your phone conversation sounds clearer. 

[Hal65]

Good to know. AIS told me they are 4G now. Not sure if it is 4g LTE though.

[mtls2005]

"Does VoLTE provide any benefit over a 3G network for international calls?"

 

No. VoLTE really only works on 4G (LTE). AIS and DTAC did just announce VoLTE interoperability,

 

http://www.nationmultimedia.com/business/AIS-DTAC-nod-to-cross-network-VoLTE-calls-30297605.html

 

but for now both parties (calling/called) need to be on the same network. You also need a VoLTE capable handset and you need to be registered for the service. Without VoLTE both parties need to fall back from 4G to 3G to make/receive a call, and this can lead to longer call completion times.