Specifications

194 IBM Voice Over Frame Relay Perform Guide
D.2 Digital Voice Ports
T-1 Port For the DSUB card:
Line Code: AMI, B8ZS
Framing Format: D4, ANSI T-1 .403 ESF, AT&T Pub 54016
Pulse Characteristics: AT&T Pub 62411 compliant
Output Amplitude: 2.4 to 3.3 volts peak to base
Receiver Sensitivity, Long Haul: 0 to -26 dBm
Receiver Sensitivity, Short Haul: 0 to -13.6 dBm
Line Buildout, Long Haul: 0 dB, -7.5 dB, -15 dB, -22 dB
Line Distance, Short Haul: 0 to 655 feet
Line Distance, Long Haul: 0 to 6000 feet
Connector: RJ48
E-1 Port For the DSUB card E-1 port:
Line Code: AMI, HDB3
Framing Format: ITU-T G.704 and G.732
Output Amplitude: 2.4 to 3.3 volts peak to base
Receiver Gain, Short Haul: 0 to 13.6 dBm
Line Distance, Short Haul: 0 to 655 feet
Connector: RJ48, BNC pair
Interface Standards:
CTR12 (RJ48/120W interface)
OTR 001 (BNC/75W interface)
D.2.1 FRAD Ports, Frame Relay Ports, and High-Speed Processor (HSP) Card Assembly
IBM 9783 provides three FRAD and/or frame relay port interfaces, with all ports
software configurable for RS-232, RS-422, or V.35 operation, and one Ethernet
port.
All FRAD/frame relay ports use a female DB25 connector. ASYNC, BISYNC, and
HDLC/SDLC protocols are supported. The connector can support frame relay
throughput in the range of 120–2546 pps. The unit supports connection for up to
256 DLCIs and subDLCIs.
The data rate for each port is individually console-configurable. Any rate below
2.048 Mbps that divides into 32.786 Mhz is a valid rate. All other rates are
rounded to the closest evenly divisible rate. Table 71 on page 195 presents the
most common data rates for both synchronous and asynchronous modes.
One HSP card is mandatory, and must be installed for proper operation of IBM
9783. IBM 9783 units support 1–4 HSPs.
FRAD Rates: BISYNC or HDLC/SDLC: 1.2 kbps to 2.016 Mbps; Async: 75 bps to
113 Kbaud.