Cisco 700 series, Installation Manual

Page: 17 / 118

Overview 1-3
Enhanced AT Command Support
There are two modes of operation in the Controller PAD (TPAD) implementation that
respond to the enhanced point-of-sale system (EPOS), Verbose and Terse. In Verbose
mode, the response is in strings, such as “CONNECT,” “NO CARRIER,” “BUSY,” and so
forth. In Terse mode the response is in numbers, such as 1 (CONNECT), 3
(DISCONNECT), 7 (BUSY), and so forth. In addition, in software Release 4.3.1, a series
of TPAD commands have been implemented to support RIVA functionality.
Permanent Linkup Mode
In areas served by carriers providing flat-rate ISDN service, the lines can be permanently
connected between the router and the central office switch. This feature can work on any
switch type.
Triggered RIP
Triggered RIP enhances the Routing Information Protocol (RIP) and enables efficient
dynamic routing over demand-circuit links such as ISDN. Defined in RFC 2091, Triggered
RIP avoids the bandwidth overhead by sending updates for only those routes with changed
metrics. Triggered RIP incorporates a reliable delivery mechanism to ensure consistent
topology information.
Dial-On-Demand Routing
Dial-on-demand routing (DDR) allows the router to dynamically initiate calls as traffic
demands to remote devices across ISDN BRI lines. The router also terminates ISDN
connections based on the level of the traffic demanded on the ISDN line and the dynamic
routing parameters.
Automatic Configuration From BOOTP
The automatic configuration feature allows the Cisco 700 series router to obtain a
configuration file from a remote server using Bootstrap Protocol (BOOTP).