I have 8 years of experience in Asterisk ,A2Billing, PHP AGI programming. Worked on various voip applications
,calling card platforms. I can work with any kind of voip application/project.
Hi Vidhya Sagar,
The NDA upgrade fee is $34. You will be prompted to pay the fee right after you click the "SEND" button.Note that by paying for the NDA upgrade, you will be able to send an NDA request to every Freelancer you invite to this Job at no extra cost.