Cisco 2651XM Software Configuration Guide - Page 110

Configuring the Digital Modem Network Module for the Cisco 3640 Router Chapter 3 Configuring with the Command-Line Interface Configuration Example The following example enables hardware compression and PPP encapsulation on serial interface 3/1. Although the Serial interface in slot 3/1 is configured with the compress stac command, the actual data compression takes place in the hardware compression card inserted in a different slot. Router(config)# interface serial 3/1 Router(config-if)# encapsulate ppp Router(config-if)# compress stac Router(config-if)# exit Router(config)# Configuring the Digital Modem Network Module for the Cisco 3640 Router The Digital Modem Network Module for the Cisco 3640 is a high-density digital network module containing 6, 12, 18, 24, or 30 digital (MICA) modems. These modems provide a direct digital connection to an Integrated Services Digital Network (ISDN) Primary Rate Interface (PRI) channel. This digital modem network module allows the access server to support a mix of both digital data calls (ISDN) and analog modem calls over a single digital network interface. Depending on the modem license you purchase with your Cisco 3640, the modems on the Digital Modem Network Module are either manageable or not manageable by Cisco IOS software commands. If the license you purchase includes this modem management capability, you can use the modem management commands to gather call and performance statistics at any time, even if there is an active call on the modem. The Digital Modem Network Module for the Cisco 3640 provides the following benefits: • Enables you, as the Enterprise customer, to support a mix of digital (ISDN) and POTS analog modem calls over a single digital network interface. • Modem management commands enable you to gather call and performance statistics. • Supports 56 kbps modem connections via the K56 Flex and V.90 standards when the portware for these standards becomes available. Prerequisites Before you can configure a modem interface, complete the following prerequisite tasks: • Install a PRI network module and another module (such as Ethernet) to provide connectivity to the LAN. Digital modem network modules do not provide physical network interfaces of their own, but instead handle analog calls passing through the PRI network module. The PRI module is capable of concurrently handling digital ISDN data and remote voice-channel (analog) modem connections. The digital modem module provides a pool of available modems that can be used for both incoming and outgoing calls. For information on how to correctly install a PRI network module, refer to the 1-Port and 2-Port ISDN-PRI Network Module Configuration Note. For information on how to install an Ethernet module, refer to the 1-Port Ethernet Network Module Configuration Note or the 4-Port Ethernet Network Module Configuration Note. For other modules, refer to the specific configuration notes pertaining to them. 3-50 Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers OL-1957-04