Preparing for Installation 2-7
Site Requirements
Table 2-3 IEEE 802.3u Physical Characteristics
MultiChannel Connections
Following are the MIP T1 specifications:
• Transmission bit rate: 1.544 kilobits per second (kbps) ± 50 parts per million (ppm)
• Output pulse amplitude: 3.0 volts (V) ± 0.6V measured at DSX
• Output pulse width: 324 nanoseconds (ns) ± 54 ns
• Complies with all AT&T Accunet TR 62411 specifications.
Following are the MIP E1 specifications:
• Transmission bit rate: 2.048 kbps ± 50 ppm
• Output port specifications: see G.703 / Section 6.2 (ITU-T specification)
• Input port specifications: see G.703 / Section 6.3 (ITU-T specification)
• Jitter attenuation starting at 6 hertz (Hz), which meets or exceeds G.823 for E1
Channel Attachment Connections
Referring to the CIP, the maximum transmission distance for ESCON (with LED) is 1.9 miles (3.1
km) point-to-point or 5.7 miles (9.2 km) with two ESCON Directors. The maximum transmission
distance for bus and tag is 400 feet (122 m). The IBM 3044 C/D (host side/remote side)
copper-to-fiber repeater can be used to extend the bus and tag distance up to 1.2 miles (2 km).
E1-G.703/G.704 Connections
Unbalanced G.703 interfaces allow for a longer maximum cable length than those specified for
balanced circuits. Table 2-4 lists the maximum cable lengths for each FSIP E1-G.703/G.704 cable
type by the connector used at the network (non-FSIP) end.
Table 2-4 E1-G.703/G.704 Maximum Cable Lengths
100BaseT
Data rate (Mbps) 100
Signalling method Baseband
Maximum segment length (meters) 100
Media UTP
1
1. UTP = unshielded twisted pair.
Topology Star
Connection Type BNC Twinax
Balanced – 300 meters (m)
Unbalanced 600m –
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