We are a VOIP startup based in Singapore and need some advisory in this front. We plan to offer services to two different segments ;
1. Residential voip – essentially to people who want to call out locally and to foreign destinations. Primary objective is to provide international calling capability to foreigners residing in Singapore at low rates (usually 1 cent per minute for calls to popular destinations) in contrast to high rates charged by local telcos.
2. Business VOIP / PBX / SIP : essentially to a business (which in itself can be group of employees). Each employee can login using a softphone like Zoiper / bria etc. Then there can be call groups, IVR etc.
We are currently battling with software components and best options. Have had calls with few providers but the solutions they provide seems bit rudimentary. For example for some of them billing solution is not adequate. Free minutes can not be accounted adequately.
So can experts recommend a software solution which is reasonably advanced and can take care of upto 1000 clients. I guess we need here a class 5 softswitch + a hosted multitenant solution with webportal for tenants.
The key we are looking for is a sophistication which can help us to scale.
We are ok with quality paid services from hosted switch PBX providers, and dont mind having 1: 1 call with experts to discuss further.