IBM 150 Manual Do Utilizador

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Adapters, Overview and Configuration 
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  • IBM 8281 ATM LAN Bridge
5.1.6  Multiple Port Adapters
In this section, information on the available multi-port asynchronous adapters 
is provided.
5.1.6.1  PCI 8-Port Asynchronous Adapter EIA-232/RS-422 (# 2943)
The 8-Port Asynchronous Adapter EIA-232/RS-422 is used for connection of 
up to eight asynchronous EIA-232 or RS-422 devices. All eight ports are 
software programmable to support either EIA-232E or RS-422A protocols at 
up to 230 Kbps.
5.1.6.2  PCI 128-Port Asynchronous Controller (# 2944)
The 128-Port Asynchronous Adapter subsystem provides attachment for a 
high concentration of asynchronous lines (up to 128) from a single PCI bus 
slot. This gives the system the ability to serve a large number of EIA-232 or 
RS-422 devices such as terminals, printers, and modems.
Two 2.4 Mbps synchronous channels link the adapter to a maximum of eight 
16-Port Remote Asynchronous Nodes (RANs).Up to four RANs can be linked 
to each synchronous channel.
These RANs provide 16 EIA-232 (# 8137) or 16 RS-422 (# 8138) ports, 
yielding a total of 128-ports in a maximum configuration. Previous RANs 
feature # 8130, 8134, or 8136 can also be used with this adapter. If these 
RANs are connected to the synchronous channel, the data rate drops down to 
1.2 Mbps. For best results, keep the previous and current RANs on separate 
synchronous channels.
5.1.7  WAN Adapters
In this section, information on the available WAN adapters is given.
5.1.7.1  PCI 2-Port Mulitprotocol Adapter (# 2962)
The 2-Port Multiprotocol Adapter provides high-speed connections to wide 
area networks (WANs) through two 2 Mbps ports. To access WAN lines, the 
adapter connects through an external communications controller, such as a 
synchronous modem, Data Service Unit (DSU), or Channel Service Unit 
(CSU). With the appropriate cable, this adapter is compatible with the 
following specifications:
  • X.21
  • V.24