1. About the ATM Line Cards
8900-A2-GB20-50
August 2005
1-3
Model 6381 and 6390 Modem support.
Models 8955, 8965, 8975, and 8968
line cards support the Model 6381 Modem. The Model 8955 line card also
supports the discontinued Model 6390 Modem.
Model 8300 Modem support.
The Model 8985 line card supports the
Model 8300 Modem.
Automatic rate adaptation.
The card and the endpoint negotiate the best
rate, limited if desired by the user, through automatic rate adaptation.
Sample Network Configurations
Figure 1-1
shows the ATM Line Card used to carry voice over DSL.
Figure 1-1.
Endpoint with Voice Interfaces
Figure 1-2
shows a configuration in which the endpoints include a router to provide
data encapsulation.
Figure 1-2.
Router Endpoint
05-17444-02
ATM
Network
ATM Cells
DSL
Integrated
Access
Device
(IAD)
SCP Card
ATM
Line Card
8820 BLC
Customer Premises
LAN
ISP
Corporate
Site
ATM Cells
Voice
Gateway
PSTN Voice
Traffic
05-17443-03
ATM
Network
Router
ATM Cells
ATM Cells
DSL
SCP Card
ATM
Line Card
8820 BLC
Customer Premises
LAN
ISP
Corporate
Site