My company got from hablaporinternet.com a solution for IP Telephony (voip), Short Message Service (SMS), sip trunk for 8 servers asterisk, migration to cloud IP-PBX or virtual offices with call recording and some DID and Toll-Free phone numbers. The call quality is very good because they use premium CLI but the price is per minute and pay as you go. We prefer a kind of unlimited minutes plan. Also there are many platforms and it is confuse to use... but after receive a free training we could move forward...