Dear customer,
I am very excited to know that you are seeking developer for your A2Billing recording functions project and would like to apply to it if it is still available.
To introduce myself, I am an Asterisk developer with more than 10 years of experience, I used to setup different VoIP systems based on Asterisk such as PABX, Billing, Call Center, Conference,....
I have deep experience in A2Billing system and am managing a production billing service based on A2Billing with many custom features.
Thank you for your consideration and I look forward to discussing with you more about this interesting project,
Yours sincerely,
Duc To