Table of Contents

Overview of the Cisco AS5200
Reference Documentation
Before You Start Configuring
Configuring for the Cisco SS7 Interconnect for Access Servers Solution
Configuring the Cisco AS5200
Sample Configuration and Steps
Configuring the Cisco AS5800 for the Cisco SS7 Interconnect for Access Servers Solution

Overview of the Cisco AS5800
Reference Documentation
Configuring the Cisco AS5800
Hardware

Controller Configurations
IP Interfaces
Sample Configuration

Configuring the Media Gateways for the Cisco SS7 Interconnect for Access Servers Solution

This chapter describes how to configure the Cisco Media Gateway (MGW) for the Cisco SS7 Interconnect for Access Servers Solution. The Cisco AS5200 and the Cisco AS5800 act as a network access server, or MGW, in an environment where SS7 and Q.931/IP is used to signal the establishment of bearer channels on time-division multiplexing (TDM) trunks connected to the MGW.

• Overview of the Cisco AS5200

• Reference Documentation

• Before You Start Configuring

• Configuring the Cisco AS5200

• Sample Configuration and Steps

• Configuring the Cisco AS5800 for the Cisco SS7 Interconnect for Access Servers Solution

• Overview of the Cisco AS5800

• Configuring the Cisco AS5800

• Controller Configurations

• IP Interfaces

• Sample Configuration

Overview of the Cisco AS5200

The Cisco AS5200 is a versatile data communications platform that provides the functions of an access server, a router, and digital modems in a modular chassis.

Note   Starting with Release 2.1 of Cisco SS7 Interconnect for Access Servers Solution, the Cisco AS5200 can no longer be ordered. Cisco supports the existing installation base only.

Note   This model is available with one Ethernet port and two serial ports. It is not recommended for use in a fault-tolerant or continuous-service configuration.

Table 7-1: Features of the Cisco AS5200

Feature	Support for ...
Asynchronous and digital ISDN calling	Service and termination of (ISDN) calls per standalone Cisco AS5200 and one phone number.
T1/E1 PRI lines	Two T1 or E1 PRI lines. Combines LAN, WAN, and asynchronous line support in a single package.
Integrated modems	As many as 60 (with E1 configuration).
Protocols and services	All protocols and services on the asynchronous ports.
Telnet connections	Dialing out from the network.
IBM tunneling and conversion	Data Link Switching (DLSw).
Management	Bandwidth management and optimization and security features including data compression, IPX/SPX spooling, and packet filters.
Multiprotocol security	Multiprotocol security levels with authorization and accounting control.

Reference Documentation

Consult the following documentation for more details:

• The hardware installation guides and the software configuration guides for each access server

• The appropriate Solutions Configuration Guide

• Regulatory Compliance and Safety Information for Cisco Media Gateway Controller Hardware

• Cisco IOS Software Configuration Guide

• Command reference publications

These publications are available on the Documentation CD-ROM that arrived with your access server and on the World Wide Web from Cisco's home page, or as printed copies you can order.

Before You Start Configuring

Before you begin, make sure that you have completed the following tasks:

• Connect a console to the Cisco AS5200 and turn on the Cisco MGW. If you need instructions to connect a terminal console to the Cisco MGW, see "Installing Media Gateways."

• Write down the IP address of your Ethernet (LAN) interface.

• Write down the set of available IP addresses to be assigned to dial-in IP clients.

• Make sure that your Cisco MGW is connected to the Ethernet network and the T1 or E1 PRI line. See "Installing Media Gateways," for connecting to the Ethernet network.

• Write down the ISDN switch type, framing type, and line code of your T1 PRI or E1 PRI line. Obtain this information from your telephone company service provider.

Note   After you remove or swap the active RLM link between the access server and the signaling controller, you have to wait at least 10 seconds for the access server to complete the switchover.

If you have questions or need assistance, see the "Obtaining Technical Assistance" section.

Configuring for the Cisco SS7 Interconnect for Access Servers Solution

This section lists the steps you should follow to configure your Cisco MGW for the Cisco SS7 Interconnect for Access Servers Solution.

• Configure the switch type to NI2 using the isdn switch-type primary-ni command. (This command enables the connection between the Cisco AS5200 and the signaling controller.)

• Configure the channelized T1 or E1 lines.

• Configure the Cisco SLT to receive calls using the RLM-group command.

Configuring the Cisco AS5200

This section lists the steps you should follow to configure your Cisco MGW for the Cisco SS7 Interconnect for Access Servers Solution.

For each Cisco AS5200 installed in your solution, you must:

• Assign an IP address to the Ethernet 10BaseT interface of your access server, using the interface ethernet 0 command, so that it can be recognized as a device on the Ethernet LAN.

• Configure the switch type to primary national ISDN (Q.931) using the isdn switch-type primary-switch command. (This command enables the connection between the Cisco AS5200 and the signaling controller.)

• Enable COT loopback support for call termination from SS7 using the isdn service cot command.

• Configure the Cisco MGW for channelized T1 or E1 lines.

• Configure the D channels for modem signaling and for receiving calls using the dialer-group command.

• Configure the modems to allow users to dial in to your network by using the modem commands modem country mica or modem country microcom_hdms.

Table 7-2: Interface Group-Async1 for Analog Dial-in Users

Feature	Purpose
description analog users	Enables synchronous modem dial-in calls to be configured as a group; must be created manually.
ip unnumbered loopback0	Prevents dial-in users from being affected by the loss of a specific IP interface in the access server.
encapsulation ppp	Enables PPP encapsulation for dial-in users.
no logging event link-status	Disables logging of link state changes.
async mode interactive	Changes line to interactive mode
peer default ip address pool default	Specifies that IP addresses for analog dial-in users will be obtained from the default IP address pool.
ppp authentication chap	Enables Challenge Handshake Authentication Protocol (CHAP) authentication (optional).
group-range <first_modem> <last>	Defines the modems in this group.
hold-queue 10 in	Specifies the maximum number of packets in the input hold-queue.
no cdp enable	Disables Cisco Discovery Protocol on this interface.

Table 7-3: Async Lines for Analog Dial -In Users

Feature	Purpose
line <first-modem> <last>	Specifies range of async modem lines with the same configuration.
autoselect during-login	Enables the username and/or password prompt to be displayed without pressing the Return key. After the user logs in, the autoselect function begins.
autoselect ppp	Configures the Cisco IOS software to allow a PPP session to start up automatically.
login local|aaa|tacacs	Enables password checking during login.
modem InOut	Configures a line to be used for both incoming and outgoing calls.

Sample Configuration and Steps

The following output is a sample configuration for the Cisco AS5200 with steps describing what commands to type:

!
hostname XXXX

Step 2   Enter your password. The following defaults appear:

spe 0/0 0/4
 firmware location system:/ucode/mica_port_firmware
spe 2/0 2/4
 firmware location system:/ucode/mica_port_firmware
!
!

Step 3   Enter your IP host name, which corresponds to your network topology:

ip subnet-zero
 
!

Step 4   Configure the switch type to Q.931, using the isdn switch-type primary command:

isdn switch-type primary-ni
!
!

controller E1 0
 framing NO-CRC4 
 clock source line primary
 pri-group timeslots 1-31 nfas_d primary nfas_int 0 nfas_group 0
!
controller E1 1
 framing NO-CRC4 
 clock source line secondary
 pri-group timeslots 1-31 nfas_d none nfas_int 1 nfas_group 0
!
!

Step 6   Assign an IP address to the Ethernet (AUI) 10Base T interface of your media gateway using the interface ethernet 0 command:

interface Ethernet0
 ip address 209.165.200.224 255.255.255.224
 no ip directed-broadcast
 no ip route-cache
 no ip mroute-cache
!

!
interface Serial1
 ip address 209.165.200.224 255.255.255.224
 no ip directed-broadcast
 no ip route-cache
 no ip mroute-cache
!
 
 no cdp enable
!
router rip
 redistribute connected
 network 209.165.200.224
!
no ip http server
ip classless
!
!

Step 8   Using the interface serial command, configure the D channel interface (0 through 30 for E1, and 0 through 23 for T1).

Step 9   Using the dialer dnis command, configure the DNIS:

dialer dnis group dnis1
 number 9157181

!
rlm version 2
!
rlm group 1
 server A
 link hostname server A source eth0 weight 1
!

line 1 60
 modem InOut
 transport preferred lat pad telnet rlogin udptn v120 
 transport input all
 transport output lat pad telnet rlogin udptn v120

Configuring the Cisco AS5800 for the Cisco SS7 Interconnect for Access Servers Solution

This section describes how to configure the Cisco IOS on the Cisco AS5800 for the Cisco SS7 Interconnect for Access Servers Solution. The Cisco AS5800 acts as a network access server, or Cisco Media Gateway (MGW), in an environment where SS7 and Q.931/IP is used to signal the establishment of bearer channels on time-division multiplexing (TDM) trunks connected to the Cisco MGW.

Overview of the Cisco AS5800

The Cisco AS5800 is a high-density, ISDN and modem WAN aggregation system that provides both digital and analog call termination. The Cisco MGW components include a Cisco 5814 dial shelf and a Cisco 7206 router shelf. An optional AC power shelf is also available. Feature cards in the dial shelf communicate with the host router shelf over a dial-shelf interconnect cable. This nonblocking interconnect cable supports 100-Mbps, full-duplex data transfer.

Note   The Cisco 72xx family routers have the VIP card capability allowing for redundant configurations.

.
Table 7-4: Supported Features for the Cisco AS5800

Feature	Support for...
Asynchronous and digital ISDN calling	Service and termination of (ISDN) calls per standalone Cisco AS5800 and one phone number.
T1/E1 PRI lines	Supports 48 T1 or 36 E1 PRI lines. Combines LAN, WAN, and asynchronous line support in a single package.
Integrated modems	As many as 720 (with E1 configuration).
Protocols and services	All protocols and services on the asynchronous ports.
Telnet connections	Dialing out from the network.
IBM tunneling and conversion	Data link switching (DLSw).
Management	Offers bandwidth management and optimization and security features including data compression, IPX/SPX spooling, and packet filters.
Multiprotocol security	Delivers multiprotocol security levels with authorization and accounting control.
T1/E1 PRI lines	Supports as many as 48 T1 or 36 E1 lines by using two 12-port interface cards.
CT3 termination	Supports as many as 672 trunks by using one T3 connection with as many as two cards (1344 trunks) per Cisco AS5800 chassis.
Dialup access	Provides wholesale dial services to both large corporations and ISPs.
Compliance	NEBS Level 3 and ETSI compliance. (These are North American and European telecom certifications.)

Reference Documentation

Consult the following documentation for more details:

• The hardware installation guides and the software configuration guides for each access server

• Cisco IOS Software Configuration Guide

• Command reference publications

These publications are available on the Documentation CD-ROM that arrived with your access server, on the World Wide Web from Cisco's home page, or as printed copies that you can order.

Configuring the Cisco AS5800

The configuration process for the Cisco IOS on the Cisco AS5800 is similar to the configuration of the Cisco AS5300, with the following exceptions:

• Controller configuration parameters

• IP interface configuration parameters

Hardware

Before you begin the configuration, verify that you have the following Cisco AS5800 cards and interfaces:

Controller Configurations

Table 7-6: Cisco AS5800 Controllers

Controller Format: T1| E1 1/0/0	Type T1| E1	Framing (SF | ESF) (crc4|no-crc4)	Line Code (B8ZS | AMI) (HDB3 | AMI)	Clocking (line | internal | loop timing)	Other	Description

IP Interfaces

 
Table 7-7: Cisco AS5800 IP Interfaces

Interface Name	Type	IP Address	Mask	Description
FastEthernet0	FE			Access to IP network, path to signaling controller for signaling, and so on.
Serial 1/0/0:23	serial	No IP address	N/A	Pseudo ISDN D channel for configuration of signaling controller; created automatically with the pri-group command.
Group-Async1	async lines	IP unnumbered loopback0	N/A	For async modem dial-in calls to be configured as a group; must be created manually.
Dialer 1	digital	IP unnumbered loopback0	N/A	For digital dial-in calls to be configured as a group; created automatically by the dialer rotary-group 1 command in S0:23 or S1/0/0:23 interface configuration.

 

Sample Configuration

Following is a sample configuration output from a Cisco AS5800 set up for bearer channels.

---

Note   In the following sample output, the Cisco 5800-3 is the Cisco AS5800 dial shelf, and the Cisco 5800-rtr is the Cisco AS5800 router shelf.

---

begin
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname DA-Slot12
!
!
!
!
!
!
ip subnet-zero
!
!
!
interface Ethernet0
 no ip address
 no ip directed-broadcast
 shutdown 
!
no ip http server
ip classless
!
!
line con 0
 transport input none
line vty 0 4
 no login
!
end
 
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname 7206-6
!
no logging console
enable password lab
!
!
!
!
shelf-id 0 router-shelf
shelf-id 1 dial-shelf
!
!
!
resource-pool disable
!
modem-pool Default
 pool-range 1/4/0-1/5/143
!

Posted: Fri Aug 25 14:26:43 PDT 2000
Copyright 1989-2000©Cisco Systems Inc.