| JPS Interop (formerly Raytheon) PSTN-2 IP Public Switched Telephone Interface Module For quantity discounts or further information call 1-800-826-2907. Manufacturer p/n: 5050-330000 The PSTN-2 IP Public Switched Telephone Interface Modules works with various JPS interoperability equipment such as the ACU-2000. This unit is easy to set up and has various pre-made cables for specific radio makes and models. For assistance with your interoperability needs call 800-826-2907. | 
