BETA DRAFT - CISCO CONFIDENTIAL
4-6
Cisco1800 Series Integrated Services Routers (Fixed) Software Configuration Guide
OL-6426-02
Chapter4 Configuring PPP over ATM with NAT
Configure DSL Signaling Protocol
Configure DSL Signaling Protocol
DSL signaling must be configured on the ATM interface for connection to your ISP. The Cisco 1801
supports ADSL signaling over POTS, the Cisco 1802 supports ADSL signaling over ISDN, and the
Cisco 1803 supports SHDSL signaling.
Based on the router you are configuring, see one of the following sections to configure the appropriate
DSL signaling protocol.
•Configuring ADSL
•Configuring SHDSL

Configuring ADSL

The default configuration for ADSL signaling is shown in Table 4- 1.
Step5 no shutdown
Example:
Router(config-if-atm-vc)# no shutdown
Router(config-if)#
Enables interface and configuration changes just
made to the ATM interface.
Step6 exit
Example:
Router(config-if)# exit
Router(config)#
Exits configuration mode for the ATM interface.
Command Purpose
Table4-1 Default ADSL Configuration
Attribute Description Default Value
Operating mode Specifies the operating mode of the digital
subscriber line (DSL) for an ATM interface.
•ADSL over POTS—ANSI or ITU full
rate, or automatic selection.
•ADSL over ISDN—ITU full rate, ETSI,
or automatic selection.
Auto
Loss of margin Specifies the number of times a loss of margin
may occur.
Training log Toggles between enabling the training log and
disabling the training log.
Disabled