Tata Voice Services Tata Voice Services Tata PRI Lines | Tata SIP Trunk | Tata Centrex Tata PRI Tata PRI enables connection of up to 30 voice channels to an enterprise EPABX on a single line. Direct Line for Each User Enterprise Friendly Billing System Ease of Management Disaster Recovery — Read More — Tata SIP Trunk IP based PSTN Telephony that can support upto 1500 voice channels over a single link. Scalabe with upto 1500 channels Reduced Infrastructure Costs No Multiple Links Best in Class IP Solution — Read More — Tata Centrex Fully managed, hosted service that offers the functionality of PBX system No Capital expenditure Hosted Solution Scalable Feature rich service — Read More —