Ejointech #manufacturer 15 years

Support 8/16/32/64 Channel, Up to 512 sim for rotation
2G/3G/4G models all available
Voice&SMS version/SMS version to choose

part of function##
Call statistics: ASR,ACD,PDD
HTTP API for SMS/USSD/AT Command
SMPP Server/Client
IMEI change

own R&D department&free technical support to our clients.

Welcome to contact me for purchase!
Joan
Tell/whatsapp/wechat +86 13755304671
skype ID: ejointech.f
www.ejointech.com