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Table Of Contents
Configuring ISDN on Cisco 800 Series Routers
Data Link and Network Layer Protocols
Configuring RCAPI on the Cisco 800 Series Router
Monitoring and Maintaining RCAPI
Configuration Examples for RCAPI
Configuring ISDN on Cisco 800 Series Routers
This chapter describes the Common Application Programming Interface (CAPI) and Remote Common Application Programming Interface (RCAPI) feature for the Cisco 800 series routers. This information is included in the following main sections:
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Configuration Examples for RCAPI
The CAPI is an application programming interface standard used to access ISDN equipment connected to ISDN BRIs and ISDN PRIs. RCAPI is the CAPI feature configured remotely from a PC client.
Before you can enable the RCAPI feature on the Cisco 800 series router, the following requirements must be met:
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To identify the hardware platform or software image information associated with a feature, use the Feature Navigator on Cisco.com to search for information about the feature or refer to the software release notes for a specific release. For more information see the "Identifying Supported Platforms" section in the "Using Cisco IOS Software" chapter.
For a complete description of the commands in this chapter, refer to the Cisco IOS Dial Technologies Command Reference. To locate documentation of other commands that appear in this chapter, use the command reference master index or search online.
CAPI and RCAPI Overview
Figure 1 shows how CAPI connects applications, drivers, and controllers.
Figure 1 CAPI Connections
Framing Protocols
The framing protocols supported by CAPI include High-Level Data Link Control (HDLC), HDLC inverted, bit transparent (speech), and V.110 synchronous/asynchronous.
Data Link and Network Layer Protocols
CAPI integrates the following data link and network layer protocols:
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CAPI Features
CAPI supports the following features:
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Figure 2 shows the components of the RCAPI implementation.
Figure 2 Components of RCAPI
CAPI provides a standardized interface through which application programs can use ISDN drivers and controllers. One application can use one or more controllers. Several applications can share one or more controllers.
CAPI supplies a selection mechanism that supports applications that use protocols at different levels and standardized network access. An abstraction from different protocol variables is performed to provide this support. All connection-related data, such as connection state and display messages, is available to the applications at any time.
Supported B-Channel Protocols
The router provides two 64-kbps B channels to RCAPI clients. Each B channel can be configured separately to work in either HDLC mode or bit transparent mode. For CAPI support, layers B2 through B7 protocols are transparent to the applications using these B channels.
The ISDN Core Engine of RVS-COM supports the following B-channel protocols:
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Supported Switch Types
CAPI and RCAPI support is available only for the ISDN switch type Net3.
CAPI and RVS-COM
The router supports the ISDN Device Control Protocol (ISDN-DCP) from RVS-COM. ISDN-DCP allows a workstation on the LAN or router to use legacy dial computer telephony integration (CTI) applications. These applications include placing and receiving telephone calls and transmitting and receiving faxes.
Using ISDN-DCP, the router acts as a DCP server. By default, the router listens for DCP messages on TCP port number 2578 (the Internet-assigned number for RVS-COM DCP) on its LAN port.
When the router receives a DCP message from a DCP client (connected to the LAN port of the router), the router processes the message and acts on it; it can send confirmations to the DCP clients and ISDN packets through the BRI port of the router.
When the router receives packets destined for one of the DCP clients on its BRI port, the router formats the packet as a DCP message and sends it to the corresponding client. The router supports all the DCP messages specified in the ISDN-DCP specifications defined by RVS-COM.
Supported Applications
ISDN-DCP supports CAPI and non-CAPI applications. Applications are supported that use one or two B channels for data transfer, different HDLC-based protocols, Euro File transfer, or G4 fax; also supported are applications that send bit-transparent data such as A/Mu law audio, G3 fax, analog modem, or analog telephones.
How to Configure RCAPI
To configure RCAPI, perform the tasks in the following sections:
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Configuring RCAPI on the Cisco 800 Series Router
To configure RCAPI on the Cisco 800 series router, use the following commands beginning in global configuration mode:
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Monitoring and Maintaining RCAPI
To monitor and maintain RCAPI, use the following command in privileged EXEC mode:
Troubleshooting RCAPI
To test the RCAPI operation, use the following command in privileged EXEC mode
Configuration Examples for RCAPI
The following configuration output example shows two Cisco 800 series routers configured for RCAPI:
Router 1Router1# show running-configBuilding configuration...Current configuration:!version xx.xservice timestamps debug uptimeservice timestamps log uptimeno service password-encryption!hostname local!ip subnet-zero!isdn switch-type basic-net3isdn voice-call-failure 0!interface Ethernet0ip address 192.168.2.1 255.255.255.0no ip directed-broadcast!interface BRI0no ip addressno ip directed-broadcastisdn switch-type basic-net3isdn incoming-voice modem!no ip http serverip classless!line con 0transport input nonestopbits 1line vty 0 4!rcapi server port 2578!rcapi number 5551000rcapi number 5553000!endRouter1#Router 2Router2# show running-configBuilding configuration...Current configuration:!version 12.0service timestamps debug uptimeservice timestamps log uptimeno service password-encryption!hostname local!ip subnet-zero!isdn switch-type basic-net3isdn voice-call-failure 0!interface Ethernet0ip address 192.168.1.1 255.255.255.0no ip directed-broadcast!interface BRI0no ip addressno ip directed-broadcastisdn switch-type basic-net3isdn incoming-voice modem!no ip http serverip classless!line con 0transport input nonestopbits 1line vty 0!rcapi server port 2578!rcapi number 5552000rcapi number 5554000!endRouter2#Cisco and the Cisco Logo are trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and other countries. A listing of Cisco's trademarks can be found at www.cisco.com/go/trademarks. Third party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1005R)
Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental.
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