Terminal Services
Terminal services provide terminal-to-host connectivity with virtual terminal protocols including Telnet,
rlogin, local-area transport (LAT), TN3270, and X.25 packet assembler/disassembler (PAD). Terminal
services can be used to connect to a modem in a modem pool for outbound connectivity. Figure 1-6
shows an example network.
Figure 1-6: Terminal Services--Example Network
Asynchronous Routing Services
Routing services enable the multiport router to route packets over LANs and WANs using the
asynchronous interfaces. A key benefit of asynchronous routing is that it provides low-cost operation by
using dialup telephone networks only when needed. Figure 1-7 shows an example network.
Figure 1-7: Asynchronous Routing--Example Network
Protocol Translation Services
Protocol translation allows terminal services running over one protocol to be translated to terminal
services running over another protocol such as an X.25 packet PAD to Telnet (using Transmission
Control Protocol/Internet Protocol [TCP/IP]). Protocol translation on the multiport router supports
Telnet, TN3270, LAT, and X.25 PAD. Figure 1-8 shows an example network.
Figure 1-8: Protocol Translation Services--Example Network
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520ovr.htm (5 of 8) [10/27/2000 3:07:36 PM]
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