Contact us

If you have a question or request, please contact our Customer Service Representative by calling
at 1-773-800-2875, sending us an e-mail to sales@voipsipsdk.com or using our contact form.

Please check our FAQ and blog before sending technical questions. We regularly check our e-mail so you will receive our reply as soon as possible.

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Client Testimonials

"ABTO SIP SDK has provided Xenex with a robust SIP toolkit that is enabling us to provide extra information to our staff that out VoIP PBX is not able to. It is very easy to use, something that can't be said for other toolkits, and is giving us lots of other ideas on how to use it to benefit both our staff and our customers. Thanks ABTO SIP SDK for your Internet phone sdk!"

/Nick Denker, Technical Director, Xenex Technologies Limited, UK /

Some of our customers