Total Access 850 System Manual Section 2 Engineering Guidelines64203376L1-1B © 2004 ADTRAN, Inc. 35T1 Connection (JP2)The Total Access 850 system provides a single T1 port (located on the rear panel) and complies with theapplicable ANSI and AT&T™ standards. The T1 interface provides the following functions:• AMI or B8ZS• Manual line build-out• D4 or ESF framing• Network performance monitoring and reporting• Test loopbacks with QRSS generation checking• Extensive self-testingThe T1 connection pinout is shown in Table 12.Table 12. Network Connection PinoutDSX-1 Connection (JP3)The Total Access 850 system provides a single DSX-1 port (located in the rear of the unit). The DSX-1interface provides the following functions:• AMI or B8ZS• Manual line build-out• D4 or ESF framingThe Total Access 850 provides dual T1 connection points. In all cases, only one ofthe connection points is used. When wire-wrapping of the T1 is utilized (using P3), ablank plug must be placed in the primary T1 connection (JP2). There is a potential ofClass A3 T1 Span Power Voltage coming from the network.Pin Name Description1 RXDATA-RING Receive data from the network2 RXDATA-TIP Receive data from the network3 UNUSED —4 TXDATA-RING Transmit data toward the network5 TXDATA-TIP Transmit data toward the network6, 7, 8 UNUSED —
