... downlink: 3.1Mbps 4.RJ-11 interface 5.PABX 450Mhz CDMA wireless terminal with faxSpecifications1,Network Type: CDMA2000 1x 450MHz2., International A:TX ... ~ 457.5 MHzRX: 462.5MHz~ 467.5MHz3, International C:TX: 450.0 MHz ~ 454.8 MHzRX: 460.0MHz~ 464.8MHz4, Dimensions ... multiple frequency two-stage dialing11, Volume adjustable12, RJ-11 interface CDMA 450MHz fixed wireless terminal