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Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
OL-2239-05
Chapter 1 Overview of Cisco uBR7200 Series Software
cops tcp window-size
National ISDN Switch Types for BRI and PRI
The Cisco uBR7200 series supports many national ISDN switch types, including those that support
Basic Rate Interface (BRI) and Primary Rate Interface (PRI). ISDN switch types are described further
in the document titled
ISDN Switch Types, Codes, and Values on Cisco.com.
PAD Subaddressing
In situations where the X.121 calling address is not sufficient to identify the source of the call, you can
append a specified value to the calling address using the PAD subaddressing feature. PAD subaddressing
allows you to create unique X.121 calling addresses by including either a physical port number or a value
specified for a line as a subaddress to the X.121 calling address.
PAD subaddressing enables an X.25 host application to uniquely identify the source of an X.121 call.
For example, in some bank security alarm applications, the central alarm host identifies the physical
location of the alarm units from subaddressing information contained in the Call Request packet.
For additional information, refer to“Configuring the Cisco PAD Facility for X.25 Connections” in the
Cisco IOS Terminal Services Configuration Guide, Release 12.2 on Cisco.com.
PPPoE Termination Support on Cable Interfaces
Cisco IOS Release 12.2(4)BC1 adds support for Point-to-Point Protocol over Ethernet (PPPoE) by
allowing a direct connection to cable interfaces. PPPoE provides service-provider digital-subscriber line
(DSL) support. The support of PPPoE on cable interfaces of the Cisco uBR7200 series routers allows
customer premises equipment (CPE) behind the cable modem to use PPP as a mechanism to get their IP
addresses and use it for all subsequent data traffic, just like a dial-up PPP client. In a PPP dial-up session,
the PPPoE session is authenticated and the IP address is negotiated between the PPPoE client and the
server, which could be either a Cisco uBR7200 series router or a Home Gateway.
Additional information about configuring PPPoE is available in the following documents:
• Configuring Broadband Access: PPP and Routed Bridge Encapsulation chapter of the Cisco IOS
Wide-Area Networking Configuration Guide, Release 12.2 on Cisco.com
• Cisco PPPoE on Ethernet feature module on Cisco.com
• RFC 2516
Ta b l e 15 Line Cards and Port Adapters Supporting MLPPP on the Cisco uBR7200 Series for
Cisco IOS Release 12.3(13a)BC
Model NPE Line Card Port Adapter
Cisco uBR7246VXR NPE-400, NPE-G1 MC16C, MC16S,
MC28C, MC28U
PA-4 T+,
PA-MC-2E1/120,
PA-M C-4T1
Cisco uBR7114 N/A N/A PA-4E1G/120,
PA-4 T+,
PA-M C-4T1
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