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Table Of Contents
ISDN Network Side for ETSI Net5 PRI
Supported Standards, MIBs, and RFCs
Configuring ISDN Network Side for ETSI Net5 PRI
Verifying ISDN Network Side for ETSI Net5 PRI
Monitoring and Maintaining ISDN Network Side for ETSI Net5 PRI
ISDN Network Side for ETSI Net5 PRI Configuration on E1
ISDN Network Side for ETSI Net5 PRI
Feature History
This feature module describes the ISDN Network Side for ETSI Net5 PRI feature. It includes information on the benefits of the new feature, supported platforms, related documents, and so on.
This document includes the following sections:
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Supported Standards, MIBs, and RFCs
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Feature Overview
The ISDN Network Side for ETSI Net5 PRI feature enables Cisco IOS to replicate the public switched network interface to a PBX that is compatible with the ETSI Net5 switch type.
Routers and PBXs are both traditionally CPE with respect to the public switched network interfaces. For Voice over IP (VoIP) applications, it is desirable to interface access servers to PBXs with the access server representing the public switched network.
Enterprise organizations use the current VoIP features with Cisco products as a method to reduce long distance costs for phone calls within and outside of their organizations. However, there are times that a call cannot go over VoIP and the call needs to be placed using the PSTN. The customer then must have two devices connected to a PBX to allow some calls to be placed using VoIP and some calls to be placed over the Public Switched Telephone Network (PSTN). In contrast, this feature allows Cisco access servers to connect directly to user-side CPE devices such as PBXs and allows voice calls and data calls to be placed without requiring two different devices to be connected to the PBXs.
This feature enables the access server to provide a standard ISDN PRI network side interface to the PBXs and to mimic the behavior of legacy phone switches. To a PBX, the access server functions as a Net5 PRI switch. No change in PBX capability or behavior is required.
Benefits
The ISDN Network Side for ETSI Net5 PRI feature provides the following benefits:
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Restrictions
The ISDN Network Side feature runs on any ISDN-capable platform with PRI interfaces.
Related Documents
The following online document, Voice over IP for the Cisco AS5800, describes VoIP capabilities and the broader configuration context on the Cisco AS5800 network access server:
http://www.cisco.com/univercd/cc/td/doc/product/access/nubuvoip/voip5800/
Supported Platforms
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Determining Platform Support Through Cisco Feature Navigator
Cisco IOS software is packaged in feature sets that support specific platforms. To get updated information regarding platform support for this feature, access Cisco Feature Navigator. Cisco Feature Navigator dynamically updates the list of supported platforms as new platform support is added for the feature.
Cisco Feature Navigator is a web-based tool that enables you to determine which Cisco IOS software images support a specific set of features and which features are supported in a specific Cisco IOS image. You can search by feature or release. Under the release section, you can compare releases side by side to display both the features unique to each software release and the features in common.
To access Cisco Feature Navigator, you must have an account on Cisco.com. If you have forgotten or lost your account information, send a blank e-mail to cco-locksmith@cisco.com. An automatic check will verify that your e-mail address is registered with Cisco.com. If the check is successful, account details with a new random password will be e-mailed to you. Qualified users can establish an account on Cisco.com by following the directions at http://www.cisco.com/register.
Cisco Feature Navigator is updated regularly when major Cisco IOS software releases and technology releases occur. For the most current information, go to the Cisco Feature Navigator home page at the following URL:
Availability of Cisco IOS Software Images
Platform support for particular Cisco IOS software releases is dependent on the availability of the software images for those platforms. Software images for some platforms may be deferred, delayed, or changed without prior notice. For updated information about platform support and availability of software images for each Cisco IOS software release, refer to the online release notes or, if supported, Cisco Feature Navigator.
Supported Standards, MIBs, and RFCs
Standards
No new or modified standards are supported by this feature.
MIBs
No new or modified MIBs are supported by this feature.
RFCs
No new or modified RFCs are supported by this feature.
Prerequisites
Before you begin to configure this feature, the following configuration tasks must be completed on the selected access server:
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For example, the selected D-channel PRI interfaces might have a configuration similar to the following:
interface Serial1/0/0:15no ip addressno ip directed-broadcastisdn switch-type primary-net5isdn protocol-emulate networkisdn incoming-voice modemno cdp enableConfiguration Tasks
See the following section for configuration tasks for the ISDN Network Side for ETSI Net5 PRI feature:
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Configuring ISDN Network Side for ETSI Net5 PRI
To configure the access server for ISDN Network Side for ETSI Net5 PRI, you can configure the primary-net5 switch type globally or you can configure the primary-net5 switch type on selected PRI interfaces. To configure ISDN Network Side for Net5, use the following commands beginning in global configuration mode:
Repeat the configuration steps on all the additional PRI D-channel interfaces you want to configure for ISDN Network Side for ETSI Net5 PRI.
Verifying ISDN Network Side for ETSI Net5 PRI
Enter the show isdn status command to learn whether ISDN Network Side for ETSI Net5 PRI is configured successfully:
router# show isdn status serial 0:15Global ISDN Switchtype = primary-5essISDN Serial0:15 interface******* Network side configuration *******dsl 0, interface ISDN Switchtype = primary-net5Monitoring and Maintaining ISDN Network Side for ETSI Net5 PRI
Configuration Examples
This section provides the following configuration example:
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ISDN Network Side for ETSI Net5 PRI Configuration on E1
The following example enables the ISDN Network Side for ETSI Net5 PRI feature on an access server on which ISDN PRI is already configured and operational. In this example, the Net5 PRI switch type is set on the D-channel interface, and the global interface type is not shown.
!controller e1 0pri-group timeslots 1-31exit!interface serial0:15no ip addressno ip directed-broadcastip mroute-cacheisdn switch-type primary-net5isdn protocol-emulate networkCommand Reference
No new or modified commands are required for this feature.
Debug Commands
No new or modified debug commands are required for this feature.
Glossary
E1—Wide-area digital transmission scheme used in Europe. The clock rate of the E1 line (2.048 MHz) allows for 32 64-kbps channels, which include one channel for framing and one channel for D-channel signalling information.
ISDN—Integrated Services Digital Network. ISDN is a communications protocol, offered by telephone companies, that permits telephone networks to carry data, voice, and other traffic.
PBX—private branch exchange. Privately owned central switching office.
PRI—Primary Rate Interface. Primary rate access consists of a single 64-kbps D channel plus 23 T1 or 30 E1 B channels for voice or data.
POTS—plain old telephone service. Basic telephone service supplying standard single line telephones, telephone lines, and access to the Public Switched Telephone Network.
PSTN—Public Switched Telephone Network. PSTN refers to the local telephone company.
T1—Digital WAN carrier facility used in North America. T1 sends DS1 formatted data at 1.544 Mbps through the telephone-switching network, using AMI or B8ZS coding.
VoIP—Voice over IP.