Cisco Switching/Routing :: Unable To Configure Access Server On 2509

I am having trouble trying to configure my cisco 2509 cisco router for access server.  I have two guides shown below: URL and URL
 
However I am running into some problems.  I can go through the second guide up until it asks me to do this command
 
Step 5: Configure the transport input protocol on the async lines to Telnet.
Access_Server(config-line)#transport input telnet
 
I cannot put in Transport Input,  I only have the option of doing Transport Output let me show some lines from my console:
 
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Access_Server(config)#line 0 14Access_Server(config-line)#no execAccess_Server(config-line)#transport input ?% Unrecognized commandAccess_Server(config-line)#transport ?  output     Define which protocols to use for outgoing connections  preferred  Specify the preferred protocol to use
Access_Server(config-line)#transport
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Im not sure whats going on.   I have two routers(cisco 2600 series) plus my 2509 cisco router I am going to use for a access server.  I have a two switches 2950 series and I have the access server connected to all of them via a octal cable.
 
Here is the configuration from the access server:
 
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Cisco Internetwork Operating System Software
IOS (tm) 2500 Software (C2500-IS-L), Version 12.3(26), RELEASE SOFTWARE (fc2)
Technical Support: [URL]
Copyright (c) 1986-2008 by cisco Systems, Inc.
Compiled Mon 17-Mar-08 14:39 by dchih
cisco 2509 (68030) processor (revision M) with 14336K/2048K bytes of memory.
Processor board ID 22840809, with hardware revision 00000000
Bridging software.