Characteristics Of L1C Types 11, 12, And 16; Characteristics Of The Llc Types 11, 12 And - IBM 3745 Series Connection And Integration Manual

The LlC 12 provides one line interface (either ITU-T V.3S or X.21) operating at
speeds up to 2 mbps.
The LlC 11 connects up to 30 lines (ITU-T V.24, V.3S, and X.21) at speeds up to
64 kbps, or 8 lines (ITU-T V.35 and X.21) at speeds up to 256 kbps, or a mixture of
these line speeds. A" 30 line interfaces, the active remote connectors (ARCs), are
housed in two line connection boxes (LeBs) of 15 slots each. This pair of LCBs is
connected to a Lie 11 via a single cable up to 105 m long.
The Lie 16 provides Primary Rate Interface (PRI) ISDN operating at 2.048 mbps.
If the speed of a line is greater than 64 kbps, selective scanning is used to prevent
the unnecessary scanning of the remaining unused slots in the LeB area.
The maximum operational capacity of the CLP depends on your specific network
and traffic characteristics.
Characteristics of LIC Types 11, 12, and 16
Table 8-1. Characteristics of the LlC Types 11, 12 and 16
LIC Types
Lie 11
LlC12 LlC16
Protocol PPP, SOLe, Frame Relay, X.25 SOLe, Frame Relay, X.25 Euro-ISON on 0 channel
Frame-relay on S channel
Line
600 bps to 256 kbps 56kbps to 2.048 mbps 1 D channel at 64 kbps
Speeds 30 S channel at 64 kbps
ITU-T V.24, V.25 Bis, V.35, X.21 V.35 or X.21 G703, G704,G706, G732
Interface (Note 1) (Note 2)
Number of
Up to 30 1
1
Ports (Note 3)
Cable 1.3, 7, 15,35, 70, 105 (Note 4) 30
Lengths
(m)
Low-Speed Medium-Speed
Lines Lines
ARC V.24 V.35 and X.21
Interface
(Note 1)
Line Speed Up to Up to
28.8 kbps 256 kbps
Notes:
1. Other interfaces (such as X.21 Sis) are supported using the appropriate 3745 cable. Refer to the Migration
and Planning Guide, GA33-0183 for part numbers and cable lengths.
2. Depends on the cable used.
3. They are multiplexed over the cable that connects the Lie 11 to a pair of LeSs.
4. Refer to the Migration and Planning Guide, GA33-0183.
For more information about the ARCs, refer to Migration and Planning Guide,
GA33-0183.
8-2
3745 All Models & 3746-900: CIG
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