Is Sound Quality of VoIP same as PSTN?
As mentioned above, Sound quality always depends on the quality of internet connection at your home or business. Only for business users with SHDSL based Internet from K5, we offer better quality whereas for home users we do not offer any guarantee. Assuming that you have very good ADSL or Cable connection the voice quality depends on what kind of codec you are using in your phone system. If you are using the high quality codec such as G711u or G711a then you will have the same experience as PSTN and sometimes you may feel it to be better than PSTN. But G711u or G711a codec requires you to have better bandwidth available. We recommend you to have at least a 256kbps/128kbps based broadband connection so you can have a very good sound quality in place. But usually overseas calls go with G729 which is another codec of less bandwidth demand and in this case you will have a very good conversation but it will not be like a replacement of PSTN. But if you have less broadband bandwidth such as
