Specifications

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Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide
DOC-7810814=
Chapter 2 Commissioning
Understanding the Basic Hardware Architecture
Note The Cisco IOS software uses a three-element notation to specify interface and port
locations: shelf/slot/port.
• The Cisco 7206 router shelf contains the following:
– Port adapters. In the example, the Cisco 7206 uses Fast Ethernet (FE) 0/1/0 to connect to the IP
backbone.
– A dial-shelf interconnect (DSI) port adapter. In the example, the adapter is located at 0/2/0.
The Cisco 7206 communicates with the Cisco 5814 dial shelf through an external dial-shelf
interconnect cable. The cable connects from the DSI port adapter to the dial-shelf controller
(DSC) card.
The Dial Shelf Interconnect Protocol (DSIP) enables communication between the Cisco 7206
and the Cisco 5814.
– Service adapters (for example, compression and encryption).
– By default, a shelf ID of 0 is assigned to the router shelf.
• The Cisco 5814 dial shelf contains the following:
– Dial-shelf controller (DSC) cards. They fit in slots 12 or 13 only. If you have one DSC card,
slot 12 is recommended. One DSC card is used in the example.
The DSC card contains its own Cisco IOS software image. For maintenance purposes only, the
card can be accessed through its console port and Ethernet interface. No IP packets originating
from any trunk or modem cards go out this Ethernet interface.
– T3/T1/E3/E1 cards. They connect to the PSTN and fit in slots 0 through 5 only. Slots 0 and 1
are recommended. In the example, one T3 trunk card is located at 1/0/0.
– Modem/voice cards. They fit in slots 0 through 11. In the example, nine modem cards are
installed. The first modem card is in slot 2. The line-modem range is 1/2/00 to 1/10/143.
– By default, a shelf ID of 1 is assigned to the dial shelf.
• The Cisco SC3640 system controller is an external management subsystem. It interfaces with the
Cisco 7206 and provides the following functions:
– SNMP and syslog offloading
– Out-of-band console access
Call-Processing Components
As shown in Figure 2-2, the following components process a call:
• Client modems and ISDN routers dial in to the access server through the PSTN.
• Asynchronous PPP calls (analog) connect to modems inside the access server.
• Each modem inside the access server provides a corresponding TTY line and asynchronous interface
for terminating character and packet mode services.
• Asynchronous interfaces clone their configurations from a group-async interface.
• Synchronous PPP calls (digital) connect to serial interface channels (for example, S1/0/0:0:0
and S1/0/0:0:1).
• Synchronous interfaces clone their configurations from a dialer interface.