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Telco and ISP Dial Scenarios and Configurations
Small- to Medium-Scale POPs
DNC-306
Cisco IOS Dial Services Configuration Guide: Network Services
Individual Remote PCs Using Analog Modems
ISPs can configure a single Cisco AS5200 access servers to receive analog calls from remote PCs
connected to modems, as shown in Figure 51. The point of presence (POP) at the ISP central site could
also be a Cisco 2511 access server connected to external modems.
Network Topology
Figure 51 shows a small-scale dial-in scenario using modems.
Figure 51 Remote PC Using an Analog Modem to Dial In to a Cisco AS5200 Access Server
Running Configuration for ISDN PRI
The following example runs on the Cisco AS5200 access server, as shown in Figure 51, which enables
remote analog users to dial in:
!
version 11.2
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
no service udp-small-servers
no service tcp-small-servers
!
hostname NAS
!
aaa new-model
aaa authentication login console enable
aaa authentication login vty tacacs+
aaa authentication login dialin tacacs+
aaa authentication ppp default tacacs+
aaa authentication ppp dialin if-needed tacacs+
enable secret cisco
!
async-bootp dns-server 10.1.3.1 10.1.3.2
isdn switch-type primary-5ess
!
Analog
modem
T1 PRI
Cisco AS5200
used to provide
Internet access
by an ISP
P
C running Windows 95
a
nd accessing
t
he Internet
Standard telephone
network (POTS)
Analog calls
Internet
S6537