Table Of Contents
Enhanced Features for Local and Advanced Voice Busyout
Supported Standards, MIBs, and RFCs
Configuring Busyout Action Graceful
Configuring Busyout Monitor Gatekeeper
Enhanced Features for Local and Advanced Voice Busyout
Feature History
12.2(13)T
This feature was introduced on the Cisco voice gateway 200 and on the Cisco 2600, Cisco 2600XM, Cisco 2691, Cisco 3640, Cisco 3660, and Cisco 3725 routers.
This document describes the Enhanced Features for Local and Advanced Voice Busyout feature in Cisco IOS Release 12.2(13)T and includes the following sections:
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Supported Standards, MIBs, and RFCs
Feature Overview
This feature introduces two new commands, busyout monitor gatekeeper and busyout action graceful. The busyout monitor gatekeeper command busies out the gatekeeper if the gateway loses connection to the primary gatekeeper and removes the busyout state when the gateway restores connection to the primary or backup gatekeeper. The busyout action graceful command controls the busyout behavior that is triggered by the busyout monitor command. This command busies out the voice port immediately if the busyout behavior is triggered, but if there is an active call on this voice port, it will wait until the call is over.
Benefits
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Related Documents
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Supported Platforms
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Determining Platform Support Through Cisco Feature Navigator
Cisco IOS software is packaged in feature sets that are supported on 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 found at this URL:
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
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MIBs
None
To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:
http://tools.cisco.com/ITDIT/MIBS/servlet/index
If Cisco MIB Locator does not support the MIB information that you need, you can also obtain a list of supported MIBs and download MIBs from the Cisco MIBs page at the following URL:
http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml
To access Cisco MIB Locator, 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 found at this URL:
RFCs
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Prerequisites
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Configuration Tasks
See the following sections for configuration tasks for the Enhanced Features for Local and Advanced Voice Busyout feature. Each task in the list is identified as either required or optional.
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Configuring Busyout Action Graceful
To configure a voice port to enter the graceful busyout state when triggered by the busyout monitor, use the following commands beginning in global configuration mode:
Configuring Busyout Monitor
To configure a voice port to monitor an interface for events that would trigger a voice-port busyout, use the following commands beginning in global configuration mode:
Configuring Busyout Monitor Gatekeeper
To configure a voice port to busyout a voice port if the gateway loses connection to the primary gatekeeper, use the following commands beginning in global configuration mode:
Verifying Busyout Status
To verify that busyout is configured correctly, enter the show running-config privileged EXEC command to display the command settings for the router, as shown in the "Configuration Examples" section.
Configuration Examples
The following is a sample configuration of the Enhanced Features for Local and Advanced Voice Busyout feature.
Router# show running configBuilding configuration...Current configuration :2143 bytes!version 12.2service timestamps debug uptimeservice timestamps log uptimeno service password-encryption!hostname 2600a!enable secret 5 $1$QHAX$W3J2KNkDTkB99UmLZ7rq9.enable password xxx!username user password 0 passwdip subnet-zerono ip routing!!no ip domain-lookup!!!!!!!!fax interface-type fax-mailmta receive maximum-recipients 0!controller T1 0/2framing sflinecode ami!!!!interface Ethernet0/0ip address 1.4.170.95 255.255.255.0no ip route-cacheno ip mroute-cachehalf-duplexh323-gateway voip interfaceh323-gateway voip id test ipaddr 1.4.170.77 1719h323-gateway voip h323-id morpheus!interface Serial0/0no ip addressno ip route-cacheno ip mroute-cacheshutdownno fair-queue!interface Serial0/1no ip addressno ip route-cacheno ip mroute-cacheshutdown!ip local pool setup_pool 1.2.71.1 1.2.71.255ip default-gateway 1.2.0.1ip classlessno ip http serverip pim bidir-enable!!dialer-list 1 protocol ip permitdialer-list 1 protocol ipx permit!!snmp-server community public RO!voice-port 1/0/0type 5!voice-port 1/0/1type 5!voice-port 1/1/0!voice-port 1/1/1busyout action gracefulbusyout monitor gatekeeperbusyout monitor Ethernet0/0!mgcpmgcp default-package dtmf-package!mgcp profile default!dial-peer cor custom!!!dial-peer voice 1 voipincoming called-number 308destination-pattern ...session protocol sipv2session target ipv4:1.4.170.77codec g711ulaw!dial-peer voice 2 potsdestination-pattern 308port 1/1/0prefix 308!dial-peer voice 3 potsdestination-pattern 309port 1/1/1!dial-peer voice 4 potsapplication mgcpapp!dial-peer voice 7 potsapplication sdfjsadf!dial-peer voice 88 pots!dial-peer voice 33 voipfax rate 12000!dial-peer voice 34 voatm!dial-peer voice 35 vofr!dial-peer voice 37 pots!dial-peer voice 90 voatm!dial-peer voice 91 voipfax rate 4800 bytes 41!dial-peer voice 92 vofr!dial-peer voice 999 voipdestination-pattern 1234session target ras!gateway!!line con 0exec-timeout 0 0line aux 0line vty 0 4password labloginline vty 5 15login!!endCommand Reference
This section documents new commands. All other commands used with this feature are documented in the Cisco IOS Release 12.2T command reference publications.
New Commands
busyout action graceful
To place a voice port into the graceful busyout state when triggered by the busyout monitor, use the busyout action graceful command in voice-port configuration mode. To remove the voice port from the graceful busyout state, use the no form of this command.
busyout action graceful
no busyout action graceful
Syntax Description
This command has no arguments or keywords.
Defaults
The default is the forced busyout.
Command Modes
Voice-port configuration
Command History
12.2(13)T
This feature was introduced on the Cisco voice gateway 200 and on the Cisco 2600, Cisco 2600XM, Cisco 2691, Cisco 3640, Cisco 3660, and Cisco 3725 routers.
Usage Guidelines
Use this command to control the busyout behavior that is triggered by the busyout monitor command. This command busies out the voice port immediately if the busyout behavior is triggered but if there is an active call on this voice port, it will wait until the call is over.
Examples
The following example shows the analog voice port busyout state set to graceful:
voice-port 1/1/1busyout action graceful
Related Commands
busyout monitor gatekeeper
To configure a voice port to enter the busyout state if connectivity to the gatekeeper is lost, use the busyout monitor gatekeeper command in voice-port configuration mode. To disable, use the no form of this command.
busyout monitor gatekeeper
no busyout monitor gatekeeper
Syntax Description
This command has no arguments or keywords.
Defaults
No default behavior or values
Command Modes
Voice-port configuration
Command History
12.2(13)T
This feature was introduced on the Cisco voice gateway 200 and on the Cisco 2600, Cisco 2600XM, Cisco 2691, Cisco 3640, Cisco 3660, and Cisco 3725 routers.
Usage Guidelines
Use this command to monitor the connection between the gateway and gatekeeper.
Examples
The following example shows the busyout monitor state set to gatekeeper:
voice-port 1/1/1busyout monitor gatekeeper
Related Commands
Glossary
AVBO—advanced voice busyout. The local voice busyout feature that provides a way to busy out a voice port or a DS0 group (time slot) if a state change is detected in a monitored network interface (or interfaces). When a monitored interface changes to a specified state, to out-of-service, or to in-service, the voice port presents a seized/busyout condition to the attached PBX or other customer premises equipment (CPE). The PBX or other CPE can then attempt to select an alternate route. AVBO adds the following functionality to the local voice busyout feature:
For Voice over IP (VoIP), monitoring of links to remote, IP-addressable interfaces by the use of a Security Assurance Agent (SAA).
Configuration by voice class to simplify and speed up the configuration of voice busyout on multiple voice ports.
Local voice busyout is supported on analog and digital voice ports using channel-associated signaling (CAS).
ICPIF—Calculated Planning Impairment Factor loss/delay busyout threshold. The ICPIF numbers represent predefined combinations of loss and delay. Packet loss and delay determine the threshold for initiating the busyout state.
LVBO—local voice busyout. Local voice busyout is designed to busy out trunks assigned to PVCs so that the PBX does not seize the circuit. Local voice busyout enables the PBX to route a call based on the actual availability of trunks. Local voice busyout enables the following:
A group of voice ports to be marked busy if a link is broken.
Specific voice ports in a PVC application to be marked busy under specified conditions.
When ports are marked busy, a call is forced back to the originating equipment (typically a PBX) that
reroutes the call over an alternate path.This action ensures that a caller does not experience "dead air" resulting from a connection that never terminates.The local voice busyout feature provides a way to busy out a voice port if a monitored network interface changes state. When a monitored interface changes to a specified state—to OOS or in-service—the voice port presents a seized/busyout condition to the attached PBX or other customer premises equipment (CPE). The PBX or other CPE can then attempt to select an alternate route.
Local voice busyout is different from busy-back. Busy-back refers to the signal sent from within the network to the calling party that indicates a busy (or congested) state anywhere along the route, up to and including the condition of the called party.
SAA—Service Assurance Agent. The Service Assurance (SA) Agent is both an enhancement to and a new name for the Response Time Reporter (RTR) feature. It allows you to monitor network performance by measuring key Service Level Agreement (SLA) metrics such as response time, network resources, availability, jitter, connect time, packet loss, and application performance.
Guest