For only $200 a month, you can get Speedflow's CallMax IP PBX platform - your all-in-one solution for IP PBX needs. Flexible, highly-functional, and easy to use, the platform enables an unlimited number of PBX accounts & extensions to be created.
The system is compatible with a variety of different payment processing systems, and also includes group calls management, voicemail to email service, extended calls forwarding options and IVR/DID support as standard. Add in 24/7 technical support, free installation and trainings, and you have the perfect deal!