Dear Concern,
I have skilled in IP Telephony System, VOIP VAS Application Development also has vast knowledge in Linux, Asterisk, Linux Shell, PHP, MySQL. Strong engineering professional with a Professional Skilled Talents, Integration IPT VAS, A2P SMS, Call Center, IP-PABX and conference bridge solution.
For getting this professional work, please let me know if you have interested.
Regards,
Amir