Cisco5814 Dial Shelf
Cisco AS5800 Universal Access Server Hardware Installation Guide1-8
On the DSC card, only one common logic is active at any one time, which is identified by the CL K
(clock) LED on the DSC card front panel. The active common logic is user selectable and is
independent from each di al shelf controller card. This assures that if a DSC card needs replacing or
if the slave DSC card be comes the master, clockin g remains stable. The s elected common logic
should not be changed during normal operation, unless related hardware failure is sus pec ted or
diagnosed.
The Cisco 7206 router shelf supports call signaling for PRI interfaces; pac ket processing, and
routing; and all commonly used high-speed LAN and WAN interfaces including Fast E therne t (FE),
Asynchronous Transfer Mode (ATM), High-Spee d Serial Interface (HSSI), and Fiber Distributed
Data Interface (FDDI). These interfaces are supported by common port ada pters tha t are c onf igure d
on the Cisco7206 router shelf.
You can install and upgrade software remotel y, without affecting current system operation. You can
also upload and download configuration fi les remotely, without affecting current system operation.
Remote access is enabled by use of SNMP, by a Telnet session to a console port o n the router shelf,
through the World Wide We b (WWW) interfa ce , or through use of the optional system controller
network management system.
The Cisco AS5800 can dynamically adjust any port to support any user configuration. Individual
users can be authenticated as they connect to the syst em by use of one or more authent ication ser vers
using RADIUS and TACAC S+ auth ent icat ion prot ocol s. Primary and ba cku p authe ntic ation serv ers
can define user authentication parameters using user domain and the number cal led. User profile
information can also be configured to include time of day, number of simultaneous sessions, and
number of B channels used.
When a remote user connects to the access server using a modem or an ISDN line, the user is
authenticated, and est ablishes a session. Dyna mic address assignment fr om an authentication serve r
or static address assignment connects the user and has virtually no impact on service provider
routing tables.
A remote LAN user can connect to the access server using an ISDN line or asynchronous serial
connection, be authenticated, and establish a session. In addition to dynamic or static address
assignment, this connection requires the traditional CiscoIOS software support for different routing
protocols on different ports simultaneously, with virtually no impact on service provider routing
tables.
A dial wholesale customer can connect to a Cisco AS5800, then tunnel PPP packet information to a
retail service provider using dial virtual privat e ne twork (dial VPN).
For detailed system specification tables, refer to AppendixA, “Cisco AS5800 Specifications.”
Cisco 5814 Dial Shelf
The Cisco 5814 dial shelf contains 14 s lots (numbered 0 to 13 on the backplane) and can support as
many as 10 modem cards, 2 T3 or 4 T1 trunk ca rds, and 2 dial s helf cont roll ers (DSCs). Slots 12 a nd
13 in the dial shelf are dedicated slots for the DSCs. Metal guard pins on the backplane module
prevent you from installing any other type of card in these two s lots. The modular chassis supports
online insertion and removal (OIR) and redundant power and includes environmental monitoring
and feedback control.
The dial shelf contains CT1/CE1 or CT3 Primary Rate Interfaces (PRIs) that terminate ISDN and
modem calls and break out individual calls from the appropriate telco services. Digital signal level
0 (DS0) or ISDN calls are terminated on the trunk card High-Level Data Link Control (HDLC)
controllers, and analog calls are sent to modem resources on the modem cards. As a resul t, an y DS0