Cisco CISCO776 Installation Guide - Page 20

Product Features If the idle time expires too close to the end of the paid period to close the connections before the end of the paid period, the router extends the connection to the end of the next paid period, minus disconnect time. X.25 Policy Routing X.25 Policy Routing routes a specific IP packet to the target IP host through an X.25 D channel and provide the parameters needed for a X.25 D channel connection. The router does not require knowledge of POS transaction formats or protocols. X.25 Over B Channel Cisco 700 series router software Release 4.1(1) and higher includes a special image that supports the Cardway TPAD services (British Telecom). The connection is made through the Cisco 700 series router serial port. X.25 Priority Queueing Priority queueing improves the responsiveness of the D channel link. X.25 is a flowcontrolled, nonbroadcast multiaccess (NBMA) protocol. A high-priority packet might not be transmitted first, even when it is eligible. With priority queueing, data can be put into one of the four priority queues: high, medium, normal, and low. Packets with the same priority are sent on a first-in-first-out basis. Leased Line Authentication Requirement Removed In software Release 4.0(1) and higher, the authentication sequence is no longer required for leased line connections. (For 64-kbps or 128-kbps leased line connections, previous versions of the software required PAP/CHAP authentication to identify the corresponding profile.) To eliminate the need for authentication, a user-defined profile named leasedline must be present and defined. If this profile is not present upon call connect, the router requires authentication to select the correct profile. If the call cannot be authenticated, the router 1-6 Cisco 700 Series Router Installation Guide