I've used OnSIP and they're top-tier and very tech-friendly:

http://www.onsip.com/

I'm not sure if they have a strong presence in Africa though - which may be important (or may not be).  You should just shoot them an email, they're very responsive.

-Adam

https://twitter.com/varud

https://www.linkedin.com/in/adamcnelson

On Thu, May 2, 2013 at 5:41 PM, maina <dmaishe@gmail.com> wrote:

Am looking for SIP trunks provider(s) for our international voice traffic.

Please get in touch with me if you can provide the said, recommendations are also welcome too.

This is an urgent requirement.

--
David Maina.
NAIROBI,
KENYA..
Cell:+254-721-950073.
Registered Linux User #407239.
Registered Ubuntu User #35129.
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