- Overview of Dial Interfaces, Controllers, and Lines
- Configuring Asynchronous Lines and Interfaces
- Asynchronous Call Queueing by Role
- Configuring Asynchronous Serial Traffic Over UDP
- Configuring and Managing Integrated Modems
- 1- and 2-Port V.90 Modem WICs for Cisco 2600 and Cisco 3600 Series Multiservice Platforms
- Call Tracker show Commands Extensions
- Cisco NM-8AM-V2 and NM-16AM-V2 Analog Modem Network Modules with V.92
- MICA and NextPort Modem Tech-Support Command Additions
- PIAFS Wireless Data Protocol Version 2.1 for Cisco MICA Modems
- V.92 and V.44 Support for Digital Modems
- V.92 Modem on Hold for Cisco AS5300 and Cisco AS5800 Universal Access Servers
- V.92 Modem on Hold for Cisco AS5350, Cisco AS5400, and Cisco AS5850 Universal Gateways and Cisco AS5800 Universal Access Servers
- V.92 Quick Connect for Cisco AS5300 and Cisco AS5800 Universal Access Servers
- V.92 Quick Connect for Cisco AS5350, Cisco AS5400, and Cisco AS5850 Universal Gateways and Cisco AS5800 Universal Access Servers
- V.92 Reporting Using RADIUS Attribute v.92-info
- Configuring and Managing Cisco Access Servers and Dial Shelves
- Configuring and Managing External Modems
- Modem Signal and Line States
- Creating and Using Modem Chat Scripts
- Cisco Modem User Interface
- Modem Script and System Script Support in Large-Scale Dial-Out
- Leased and Switched BRI Interface for ETSI NET3
- ISDN BCAC and Round-Robin Channel Selection Enhancements
- Configuring Virtual Asynchronous Traffic over ISDN
- Configuring Modem Use over ISDN BRI
- Configuring X.25 on ISDN
- Configuring X.25 on ISDN Using AO/DI
- Configuring ISDN on Cisco 800 Series Routers
- Cisco IOS Software Feature Removal
- Configuring ISDN PRI
- Dialing Number Enhancement
- ISDN BCAC and Round-Robin Channel Selection Enhancements
- Configuring ISDN Special Signaling
- Configuring Network Side ISDN PRI Signaling, Trunking, and Switching
- Preparing to Configure DDR
- Configuring Legacy DDR Spokes
- Configuring Legacy DDR Hubs
- Configuring Peer-to-Peer DDR with Dialer Profiles
- Dialer Map VRF-Aware for an MPLS VPN
- Dialer Persistent
- PPPoE Client DDR Idle-Timer
- Redial Enhancements
- Rotating Through Dial Strings
- Configuring Dialer CEF
- CEF Support for Dialer Profiles on Cisco 7500 Routers
- Configuring Snapshot Routing
- Reliable Static Routing Backup Using Object Tracking
- Configuring Dial Backup for Serial Lines
- Configuring Dial Backup Using Dialer Watch
- Dialer Watch Connect Delay
- VRF Aware Dialer Watch
- Configuring Dial Backup with Dialer Profiles
- ISDN Backup in MPLS Core
- Configuring Cisco Easy IP ..
- Configuring Virtual Template Interfaces
- Multiclass Multilink PPP
- Configuring Asynchronous Callback
- Configuring PPP Callback
- Configuring ISDN Caller ID Callback
- Configuring BACP
- Configuring an IP Local Pools Holdback Timer
- Configuring per-User Configuration
- Configuring Resource Pool Management
- Configuring Wholesale Dial Performance Optimization
- Large-Scale Dial-Out
- Dial-Out DS0 Level Trunk Group
- L2TP Large-Scale Dial-Out
- L2TP Large-Scale Dial-Out per-User Attribute via AAA
- Modem Script and System Script Support in Large-Scale Dial-Out
- Large-Scale Dial-Out (LSDO) VRF Aware
- Peer Pool Backup
- Dial Networking Business Applications
- Enterprise Dial Scenarios and Configurations
- Telco and ISP Typical Dial Scenarios and Configurations
- Modem Initialization Strings
V.92 Quick Connect for Cisco AS5350, Cisco AS5400, and Cisco AS5850 Universal Gateways and Cisco AS5800 Universal Access Servers
This feature module introduces the V.92 International Telecommunication Union Telecommunication Standardization Sector (ITU-T) standard Quick Connect (QC) feature on NextPort/DFC108-bearing platforms using Cisco IOS Software Releases 12.2(2)XA, 12.2(2)XB, and 12.2(11)T.
Feature Overview
V.92
To remain current with industry needs, the ITU-T V.90 modem standard recommendations have been enhanced. The new standard, V.92, meets the need for a digital modem and analog modem pair on the Public Switched Telephone Network (PSTN). V.92 improves the upstream data signaling rate and adds new features that enhance modem usability. These new modem protocols and standards are implemented at the modem level.
This feature module introduces the V.92 Quick Connect feature on Cisco AS5350, Cisco AS5400, and Cisco AS5850 universal gateways and Cisco AS5800 universal access servers.
Note
The other feature introduced with the new V.92 standard is V.92 Modem on Hold, which is documented in the V.92 Modem on Hold for Cisco AS5350, Cisco AS5400, and Cisco AS5850 Universal Gateways and Cisco AS5800 Universal Access Servers feature module. V.92 Modem On Hold and V.92 Quick Connect can be enabled independently of each other.
V.92 provides new modem protocols and standards that are implemented at the modem level.
NextPort firmware provides V.92 capabilities bundled with existing NextPort features. The NextPort Dial Feature Card (DFC-108NP) is responsible for the ITU implementation of V.92 and the collection of statistics related to the new features, including the new modem states that occur with the additional negotiations for V.92. The statistics are collected by the DFC but are passed to and stored in Cisco IOS software. Cisco IOS software is responsible for controlling the features and displaying the new statistics.
The Cisco AS5800 uses the NextPort high density dial termination card to implement this feature. Both voice and dial technologies are supported when used in a Cisco 5850 universal gateway.
Note V.92 and V.44 are packaged together with Cisco IOS software. For more information about V.44, refer to the V.44 LZJH Compression for Cisco AS5350, Cisco AS5400, and Cisco AS5850 Universal Gateways and Cisco AS5800 Universal Access Server feature module.
Quick Connect
V.92 Quick Connect speeds up the client-to-server startup negotiation, reducing the overall connect time up to 30 percent. The client modem retains line condition information and characteristics of the connection to the Internet service provider (ISP), which reduces connect time by avoiding some of the initial signal handshaking.
Disconnect reasons and modem states and statistics (link information) have been added or modified to support V.92 Quick Connect. Table 1 lists the new V.92 Quick Connect states, and Table 2 lists the new link information parameters.
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V.92 Quick Connect is being used to reconnect after a V.92 Modem on Hold exchange. |
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A shortened phase 2, using V.92 Quick Connect, is taking place. |
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AT Commands and S-Registers
V.92 Quick Connect is enabled by default and is controlled with standard AT commands and S-registers. S29 is used to enable V.92 sequence detection and S63 is used to enable Quick Connect negotiation, both of which are enabled by default. The S63 S-register controls the feature through the ANSpcm signal. You can choose the power level of the ANSpcm signal, which defaults to -12dBm (the transmit power level for the United States). The ATSn=v and ATSn? AT commands are used to configure V.92 Quick Connect on NextPort platforms.
To disable V.92 Quick Connect or to set a different ANSpcm value, you can use a modemcap (for example, v92_v44:MSC=s62=8s63=0s21=15s29=12), or you can set the S29 register to any number other than 12. Table 3 lists the S-registers used to enable and disable the V.92 Quick Connect feature.
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0 = V.34 Automode, without V.32ter 1 = V.34 Automode, without V.32ter |
Note If the V.92 Quick Connect feature is enabled using S29=12, and QC is disabled using S63=0, then the QC Exchange Link Information Parameter is updated to show if QC was requested. However, completely disabling the feature by setting S29 to a value other than 12 disables the reporting of QC requests.
For detailed information about the AT commands and S-registers that are used to configure the V.92 Quick Connect feature supported by NextPort services, refer to the AT Command Set and Register Summary for NextPort Platforms.
Benefits
This feature improves ISP port usage because of the reduction in connect time.
V.92 is a standard modem feature that is offered as a no-cost upgrade to the installed system.
Restrictions
- Minimum of 32K memory is needed for bundled NextPort firmware.
- Additional data space is needed on the modem module (refer to NextPort documentation).
- Configuration of these features using S-registers is carried out by using modemcaps (AT commands). Cisco IOS software does not check these values to guarantee that they are valid.
- Cisco IOS software is packaged as multiple program image types with varying capabilities. Because not all modem interfaces support Quick Connect and because images may be built to support specific modem types, not all software images contain functions to control Quick Connect. In addition, the modems that do support Quick Connect implement their control functions differently. Therefore, registry functions are used to interface between local authorization and Quick Connect control for modems.
Related Features and Technologies
Related Documents
- AT Command Set and Register Summary for NextPort Platforms
- Cisco AS5350 documentation index
- Cisco AS5400 documentation index
- Cisco AS5800 documentation index
- Cisco AS5850 documentation index
- Comparing NextPort SPE Commands to MICA Modem Commands
- Managing and Troubleshooting the NextPort Dial Feature Card
- NextPort Port Service Management for the Cisco AS5400 Universal Gateways
- V.92 Modem on Hold for Cisco AS5350 and Cisco AS5400 Universal Gateways
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
To obtain lists of supported MIBs by platform and Cisco IOS release, and to download MIB modules, go to the Cisco MIB web site on Cisco.com at the following URL
http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml
Prerequisites
- Cisco IOS Release 12.2(2)XA, 12.2(2)XB, or 12.2(11)T
- Minimum of 32K memory needed for bundled Cisco NextPort firmware
- Additional data space needed on the modem module (refer to NextPort documentation)
- Basic configuration of the Cisco AS5350, Cisco AS5400, Cisco AS5850, or Cisco AS5800
- Upgraded modem firmware
- NextPort DFC installed
Configuration Tasks
For information about configuration, refer to the following documents:
Configuration Examples
Command Reference
This feature uses no new or modified commands. For information about all Cisco IOS commands, go to the Command Lookup Tool at http://tools.cisco.com/Support/CLILookup or to the Cisco IOS Master Commands List.
Glossary
CSMv6 —Mindspeed modem hardware solution.
DSP —Digital Signal Processor. Microprocessor on which the modulation/demodulation process is carried out.
ISP —Internet service provider.
ITU-T —International Telecommunication Union Telecommunication Standardization Sector.
LZJH —Lempel-Ziv-Jeff-Heath data compression algorithm used in V.44.
MOH —Modem on Hold functionality specified in V.92.
NextPort —Device driver architecture for Cisco IOS software that supports the NextPort hardware and software interfaces. Supports the universal port concept.
PSTN —Public Switched Telephone Network.
QC —Quick Connect functionality specified in V.92.
universal port —Concept of a single device that can terminate one digital signaling level zero (DS-0) with a data modem, fax modem, ISDN, or voice solution.
V.44 —ITU modem standard for LZJH data compression algorithm.
V.92 —ITU modem standard that contains Quick Connect and Modem On Hold.
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