Cisco IOS Software Releases 12.2 T

Table Of Contents

V.92 Modem on Hold for Cisco AS5350, Cisco AS5400, and Cisco AS5850 Universal Gateways and Cisco AS5800 Universal Access Servers

Feature Overview

V.92

Modem on Hold

AT Commands (Modemcaps) and S-Registers

RADIUS Authorization

Configuring V.92 Modem on Hold with RADIUS

Modem Enhancements for V.92 Modem On Hold

Supported Module Firmware and Cisco IOS Software

Benefits

Restrictions

Related Features and Technologies

Related Documents

Supported Platforms

Supported Standards, MIBs, and RFCs

Prerequisites

Configuration Tasks

Monitoring and Maintaining Modem on Hold

Configuration Examples

Command Reference

show call calltracker active

show port configuration

show port modem log

show port operational-status

show spe modem active

show spe modem csr

show spe modem disconnect-reason

show spe modem summary

Glossary

V.92 Modem on Hold for Cisco AS5350, Cisco AS5400, and Cisco AS5850 Universal Gateways and Cisco AS5800 Universal Access Servers

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Feature History

Release	Modification
12.2(2)XA	This feature was introduced on Cisco AS5350 and Cisco AS5400 universal gateways running NextPort firmware.
12.2(2)XB	This feature was supported with Cisco IOS Software Release 12.2(2)XB.
12.2(2)XB1	This feature was supported on Cisco AS5800 universal access servers and Cisco AS5850 universal gateways.
12.2(11)T	This feature was integrated into Cisco IOS Release 12.2(11)T and support was added for the Cisco AS5350, Cisco AS5400, Cisco AS5800, and Cisco AS5850 platforms.

This feature module introduces the V.92 International Telecommunication Union Telecommunication Standardization Sector (ITU-T) standard Modem on Hold (MOH) feature on NextPort/DFC-108NP-bearing platforms for use with Cisco IOS Releases 12.2(2)XB1 and 12.2(11)T.

This document includes the following sections:

•Feature Overview

•Supported Platforms

•Supported Standards, MIBs, and RFCs

•Prerequisites

•Configuration Tasks

•Monitoring and Maintaining Modem on Hold

•Configuration Examples

•Command Reference

•Glossary

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 Modem on Hold feature on Cisco AS5350, Cisco AS5400, and Cisco AS5850 universal gateways and Cisco AS5800 universal access servers.

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Note The other feature introduced with the new V.92 standard is V.92 Quick Connect, which is documented in the V.92 Quick Connect 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.

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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 dial feature card (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.

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Note V.92 is packaged with V.44 in Cisco IOS software. For more information about V.44, refer to theV.44 LZJH Compression for Cisco AS5350, Cisco AS5400, and Cisco AS5850 Universal Gateways and Cisco AS5800 Universal Access Servers feature module.

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Modem on Hold

V.92 Modem on Hold allows a dial-in customer to suspend a modem session to answer an incoming voice call or to place an outgoing call while engaged in a modem session. When the dial-in customer uses Modem on Hold to suspend an active modem session to engage in an incoming voice call, the Internet service provider (ISP) modem listens to the original modem connection and waits for the dial-in customer's modem to resume the connection. When the voice call ends, the modem signals the telephone system to end the second call and return to the original modem connection, then the modem signals the ISP modem that it is ready to resume the modem call. Both modems renegotiate the connection, and the original exchange of data continues.

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Note This feature is designed for use on telephone lines that are configured for call-waiting service; call-waiting signals trigger the suspension of the modem session. If call-waiting service is not present on the subscriber's line, other callers receive a busy signal, and the modem session is not interrupted.

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Use of the V.92 Modem on Hold feature for Cisco NextPort firmware can be controlled globally using AT commands (modemcaps) or can be controlled on a per-caller basis using the RADIUS distributed client/server system.

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Note You are not required to have a RADIUS server to use the Modem on Hold feature.

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The following sections contain information about controlling the V.92 Modem on Hold feature:

•AT Commands (Modemcaps) and S-Registers

•RADIUS Authorization

AT Commands (Modemcaps) and S-Registers

V.92 Modem on Hold is disabled by default and is controlled with standard AT commands and S-registers. V.92 is enabled and disabled with the S29 S-register (S29 = 12), and Modem on Hold is controlled with the S62 S-register (S62 must be set to enable Modem on Hold). AT commands download the configuration to the modem at the end of every call. The ATSn=v and ATSn? AT commands are used to configure V.92 Modem on Hold on NextPort platforms. Table 1 lists additional S-register parameters used to enable and disable the feature.

To disable V.92 Modem on Hold, you can use a modemcap (for example, s62=0s63=3s21=15s29=12) or set the S29 register to any number other than 12. You can also use the RADIUS vendor-specific attribute (VSA) to disable Modem on Hold if the feature was initially enabled by the default value (modemcap).

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Note If the feature is enabled using S29=12 and Modem on Hold is disabled using S62=0, statistics for the number of times a dial-in customer requests an on-hold are tracked in the MOH link information parameters. However, completely disabling the feature by setting S29 to a value other than 12 disables the reporting of all MOH statistics.

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For detailed information about the AT commands and S-registers used to control V.92 on NextPort platforms, refer to the AT Command Set and Register Summary for NextPort Platforms.

Table 1 V.92 Modem on Hold S-Registers 

Name	Register	Index	Default	Description
Modem standard	S29	NextPort 0x8013	12 (V.92 enabled)	0 = V.34 Automode, without V.32ter 1 = V.34 Automode, without V.32ter 2 = V.32ter Automode 3 = V.32bis Automode 4 = V22bis Automode 5 = K56Flex 6 = V.90 Automode (V.92 builds only) 7 = (reserved) 8 = V.110 9 = (reserved) 10 = V.120 11 = Clear Channel 12 = V.92 Automode (V.92 builds only)
MOH timeout	S62	NextPort 0x803f	0	0:   MOH disabled 1:   10 seconds 2:   20 seconds 3:   30 seconds 4:   40 seconds 5:   1 minute 6:   2 minutes 7:   3 minutes 8:   4 minutes 9:   6 minutes 10:  8 minutes 11:  12 minutes 12:  16 minutes 13:  No limit

RADIUS Authorization

Per-user control of Modem on Hold can be configured for caller authorization using a RADIUS server. RADIUS servers use the vendor-specific attribute (VSA) capability to configure Modem on Hold for individual users. The current attribute=value protocol syntax has been extended with the new
Modem on Hold attribute. You can enter the following value for this attribute:

•An unsigned integer in the range 0 through 65,535—Represents the maximum number of seconds that a modem may remain on hold, which can range from ten seconds to an unlimited number of minutes.

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Note Although the integer attribute values can be specified as any value in a contiguous range, V.92 specifications limit configuration to a limited set of values. Attribute values are rounded down to the next permitted value when they are used to configure a modem.

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Alternatively, you can enter the inf keyword, which allows the modem to remain on hold indefinitely.

If the Modem on Hold configuration is not present, or if it is not syntactically correct, the modem uses its default configuration for Modem on Hold. The default operation can be modified by using a modemcap string. Following authentication of a dial-in user, an additional control command is sent to the modem if the dial-in user does not have a default Modem on Hold configuration.

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Note Code space requirements for RADIUS support is less than 2KBs. There are no additional data space requirements.

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V.92 Modem on Hold running on systems using RADIUS authorization increases the length of RADIUS response packets by approximately 20 bytes. RADIUS databases increase in size by approximately the same amount for each dial-in user with a nondefault Modem on Hold attribute value.

With RADIUS, authentication and authorization occur as part of the same process. When a caller connects to the access server, the caller enters a user ID and password in response to prompts from the access server. This information is formatted as a RADIUS request packet and is sent to the appropriate RADIUS server. If the user ID is valid and the password matches, the RADIUS server responds with a packet containing authorization data for the connection. This authorization data contains the Modem on Hold configuration if it is present in the RADIUS database.

The access server interprets the response from the RADIUS server and performs any actions associated with the authorization data. For Modem on Hold, a command is sent from the Cisco IOS host to the NextPort channel to set the Modem on Hold parameters. No confirmation from the channel is required.

When the client modem requests a Modem on Hold operation, the modem switches to an on-hold state, which prevents further data from being queued to the connection. When the Cisco IOS software receives the request to go on hold, any transmit packets queued to local Cisco IOS queues (packets not already posted to the queues shared between the Cisco IOS software and the modem) are discarded. This mechanism reduces the possibility that stale data will be transmitted to the modem when the connection is reactivated. It also reduces the number of buffer resources that are tied up while a modem is on hold.

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Note When using a RADIUS server, placement of commas is important. The asterisk in the modem-on-hold attribute indicates that the attribute is optional. If a modem does not support Modem on Hold, then the call might continue anyway. If the asterisk is replaced by an "=", the attribute is required, and modems that do not support Modem on Hold terminate the calls following authentication.
The value of the attribute is the number of seconds allowed for the on-hold state. This value is rounded by the Cisco IOS software to one of the permissible values. The number can be replaced with the inf command, which allows unlimited on-hold time. Case is significant for both attribute names and values.

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Note If your router is configured for RADIUS, the RADIUS server must be accessible to the router. The server must also be capable of responding to authentication requests with VSA attributes.

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Configuring V.92 Modem on Hold with RADIUS

If you use RADIUS to configure the Modem on Hold feature, use the modem-on-hold attribute, where the VALUE attribute is a nonnegative integer in seconds for maximum time on hold allowed. VALUE can be one of the following:

•modem-on-hold=VALUE—MOH support is required for call to be accepted.

•modem-on-hold*VALUE—MOH support is optional.

The following example shows RADIUS enabled where Modem on Hold is optional:

vendor-specific=9:1:modem-on-hold*VALUE

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Note The examples shown below were established on the Cistron open-source server. Your server syntax may vary.

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# This user can use MOH without time limits. (inf)

# MOH capability is not required for the connection (*)

testi Auth-Type = Local, Password = "test"

Service-Type = Login-User,

Cisco-AVPair = "modem-on-hold*inf"

# This user can use MOH for 30 seconds.

# MOH capability is not required for the connection.

test30 Auth-Type = Local, Password = "test"

Service-Type = Login-User,

Cisco-AVPair = "modem-on-hold*30"

# This user can not use MOH.

# MOH capability is not required for the connection.

test0 Auth-Type = Local, Password = "test"

Service-Type = Login-User,

Cisco-AVPair = "modem-on-hold*0"

# This user can not use MOH.

# But MOH capability IS required for the connection.

# If the user logs on to a device that does not support

# MOH (eg the console), he will be disconnected after

# authentication.

testr	 Auth-Type = Local, Password = "test"

	Service-Type = Login-User,

	Cisco-AVPair = "modem-on-hold=0"

# This user gets the default MOH setting.

# The default setting is disabled, unless overridden

# by a modemcap entry.

testx	 Auth-Type = Local, Password = "test"

	Service-Type = Login-User

# This user can go on hold for 60 seconds

# in a PPP link. The service type determines

# which calls get the MOH setting.

lucy Auth-Type = Local, Password = "test"

	Service-Type = Framed-User,

	Cisco-AVPair = "modem-on-hold*60"

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Note The service type defines when the AVPair is applied. For different RADIUS servers, the Cisco-AVPair syntax might be different, but the value in quotes does not change. Case is important: The entire text in quotes must be lowercase.

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For more information about using RADIUS, refer to the Configuring RADIUS documentation.

Modem Enhancements for V.92 Modem On Hold

The following modem enhancements have been made for the implementation of the
V.92 Modem on Hold feature:

•Disconnect Reasons

•Duration Limit Timer

•Modem on Hold Link Information Parameters

•Modem States

•New and Modified MIBs

Disconnect Reasons

V.92 Modem on Hold Disconnect Reasons is the method by which a modem tells the Cisco IOS software (host) why it has terminated its session with a client through the Modem on Hold cleardown by modem and the Modem on Hold timeout values. Table 2 lists the new Modem on Hold Disconnect Reasons.

Table 2 Modem On Hold Disconnect Reasons

Name	Description
DR_MOH_CLRD	Modem On Hold cleardown by modem
DR_MOH_TIMEOUT	Modem On Hold timeout value reached

Duration Limit Timer

The Modem on Hold duration limit timer is supported within dialed number ID service (DNIS), calling line ID (CLID), RADIUS (but not TACACS+), and global resource pool manager server (RPMS) virtual groups. This support permits ISPs to associate the Modem on Hold feature and its timer limit according to customer needs. When the Modem on Hold timer is active (a modem is on hold), it must take precedence over the idle timer. For example, if the idle value is five minutes and the Modem on Hold duration limit is ten minutes, the customer is permitted to be on another call for up to ten minutes without being disconnected after five minutes by the idle timer. The Modem on Hold timer value resets at the end of each on-hold session.

Modem on Hold Link Information Parameters

Table 3 Modem on Hold Link Information Parameters

Name	Description
MOH Status	0: Modem is not on hold 1: Modem is on hold
MOH Count	Number of times the modem is on hold
MOH Request Count	Number of times the modem received Modem on Hold requests.
Total MOH Time	Total holding time: 65,535 seconds maximum
Current MOH Time	Current holding time: 65,535 seconds maximum
Call Waiting Retrains	Number of times a retrain occurred due to a call-waiting signal

Modem States

This feature supports modem states, which are discrete states that a modem transitions through, during, and after negotiation with a client modem. These states include the Modem on Hold input state, the Steady input state, and the Steady, Steady Retrain, and Terminate output states.

New and Modified MIBs

Existing MIBs that show the status of modem settings have been extended to show V.92 Modem on Hold configuration status. New MIBs have been created to report the incidence of V.92 Modem on Hold request calls coming into the server and to monitor on-hold status.

Supported Module Firmware and Cisco IOS Software

V.92 Modem on Hold is supported on the following firmware and software:

•Module Firmware—The module firmware is a combination of modem (Digital Signal Processor or DSP) firmware and the module controller firmware. It is responsible for the collection of statistics and the actual implementation of V.92, including additional required state transitions.

•Cisco IOS software—The Cisco IOS software is responsible for the control and statistics reporting of the new features, including modemcaps, RADIUS authorization, and command-line interface (CLI) support. See the "Related Documents" section for information about new Cisco IOS Release features.

Benefits

Allows Voice Calls Without Interruption of Existing Modem Connection

V.92 Modem on Hold allows the origination and reception of voice calls without disturbing preexisting modem sessions. With Modem on Hold, calls can ring through to the dial-in user without requiring the expense of a second telephone line.

Per-Use Enabling

Service providers can enable Modem on Hold on a per-user basis for premium service opportunities.

Standard Modem Feature

V.92 is a standard modem feature that is offered as a no-cost upgrade to the installed system.

V.92 Compatibility

Modems that support V.92 are fully compatible with modems that do not support it. If a modem that supports Modem on Hold connects with a modem that does not support it, the modems will connect normally. However, the Modem on Hold function is not available for that call.

Restrictions

•Client modem vendors must supply their own utilities to enable Modem on Hold with each client modem.

•There is no standard method for notifying remote or user applications that a modem session has been placed on hold. Extending timeouts or increasing the maximum number of attempts to perform certain operations might be necessary. No e-mail data should be lost because of on-hold times.

•When a Modem on Hold transaction returns to the data-connected state, it retains the same IP network connection. Any other connected applications might not be returned to their prior state, depending on the application's data transaction requirements during the Modem on Hold active state.

•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. The behavior of invalid values is determined by the module.

•Authorization of Modem on Hold is not provided as a standard service by RADIUS. However, RADIUS provides a vendor-specific attribute (VSA) capability that can be used to extend authorization mechanisms. This capability is already used by Cisco routers to provide other custom services.

•Cisco IOS software is packaged as multiple program image types with varying capabilities. Because not all modem interfaces support Modem on Hold and because images may be built to support specific modem types, not all software images contain functions to control Modem on Hold. In addition, the modems that do support Modem on Hold implement their control functions differently. Therefore, registry functions are used to interface between RADIUS, local authorization, and Modem on Hold control for modems.

•Server-initiated Modem on Hold is not supported

•During a suspended modem session, some data might be dropped. The ISP idle timer, which disconnects a dial-in user if there is no data exchanged for a period of time, should be reset and suspended while a connection is on hold.

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Note Many client modems used in Europe are known to have problems with the Modem on Hold feature. The vendors are aware of the issue and are working to correct it. If you are having trouble with the Modem on Hold feature in Europe, it is suggested that the customer contact the client modem vendor to verify that the modem complies with the telephony signaling for call waiting, caller ID, and 3-way calling in their particular country.

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Related Features and Technologies

•V.92 Quick Connect

•V.44 LZJH data compression service

•Mindspeed CSMv6 hardware solution

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

•Cisco AS5800 Universal Access Server Release Notes

•Cisco IOS Release 12.2 Master Indexes

•Comparing NextPort SPE Commands to MICA Modem Commands

•Managing Port Services on the Cisco AS5400 Universal Gateway

•Managing and Troubleshooting the NextPort Dial Feature Card

•New Features in Release 12.2(2)XB

•NextPort Port Service Management for the Cisco AS5400 Universal Gateway

•Release Notes for Cisco AS5350 Universal Gateways for Cisco IOS Release 12.2 XA

•Release Notes for Cisco AS5350 and AS5350HPX Universal Gateways for Cisco IOS Release 12.2 XB

•Cisco IOS Release 12.2T Cross-Platform Release Notes

•SPE and Firmware Download Enhancements

•V.44 LZJH Compression for Cisco AS5350 and Cisco AS5400 Universal Gateways

•V.92 Quick Connect for Cisco AS5350 and Cisco AS5400 Universal Gateways

Supported Platforms

•Cisco AS5350

•Cisco AS5400

•Cisco AS5800

•Cisco AS5850

Table 4 Cisco IOS Release and Platform Support for this Feature

Platform	12.2(2)XA	12.2(2)XB1	12.2(11)T
Cisco AS5350	X	X	X
Cisco AS5400	X	X	X
Cisco AS5800	Not supported	X	X
Cisco AS5850	Not supported	X	X

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 quickly 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:

http://www.cisco.com/go/fn

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

•V.44

•V.92 Modem on Hold

•V.92 Quick Connect

MIBs

•CISCO-MODEM-MGMT-MIB

•CISCO-CALL-TRACKER-MODEM-MIB

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:

http://www.cisco.com/register

RFCs

No new or changed RFCs are supported by this feature.

Prerequisites

•Cisco IOS Release 12.2(2)XB1 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 Cisco NextPort documentation)

•Basic configuration of the Cisco AS5350, Cisco AS5400, Cisco AS5800, or Cisco AS5850

•Upgraded modem firmware

•NextPort DFC installed

•Modems must be capable of supporting Modem on Hold

Configuration Tasks

None

For additional information, refer to the following documents:

•V.44 LZJH Compression for Cisco AS5350, Cisco AS5400, and Cisco AS5850 Universal Gateways 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

Monitoring and Maintaining Modem on Hold

Use the following show commands in privileged EXEC mode.

Command	Purpose
Router# show spe modem active	Displays the modem service statistics of all active calls on specified service processing elements (SPEs).
Router# show spe modem disconnect-reason	Displays the digital disconnect reasons for the specified SPE or SPE range.
Router# show port operational-status	Displays the operational status of the specified ports or the specified port range.
Router# show port modem log	Displays the event log with oldest event first.
Router# show port configuration	Displays the configuration information for specified ports or the specified port range.
Router# show spe modem csr	Displays the call success rate (CSR) for the specified SPEs.
Router# show spe modem summary	Displays the modem service history statistics for specified SPEs.
Router# show call calltracker active	Displays the port level information stored within the Call Tracker active database for all active modem calls.

Configuration Examples

None

Command Reference

This section documents new or modified commands. All other commands used with this feature are documented in the Cisco IOS Release 12.2 command reference publications.

•show call calltracker active

•show port configuration

•show port modem log

•show port operational-status

•show spe modem active

•show spe modem csr

•show spe modem disconnect-reason

•show spe modem summary

show call calltracker active

To display all information stored within the Call Tracker active database for all active calls, use the show call calltracker active command in privileged EXEC mode.

show call calltracker active [category [isdn | modem | other | v110 | v120]]

Syntax Description

category	(Optional) Displays Call Tracker data for a specific type of call. The default is to show all calls, regardless of type. By specifying the category keyword with one of the optional modem type keywords, Call Tracker only shows calls whose records indicate that category.
isdn	Displays Call Tracker data for calls on the ISDN.
modem	Displays all of the information calls.
other	Displays Call Tracker data for other call categories.
v110	Displays Call Tracker data for V.110 calls.
v120	Displays Call Tracker data for V.120 calls.

Defaults

Specific activity and configuration information is not displayed.

Command Modes

Privileged EXEC

Command History

Release	Modification
12.1(2)XH	This command was introduced.
12.1(3)T	This command was introduced.
12.2(2)XA	This command was supported on the Cisco AS5350.
12.2(2)XB1	This command was supported with Cisco IOS Release 12.2(2)XB.
12.2(11)T	This command was integrated into Cisco IOS Release 12.2(11)T.

Usage Guidelines

This command allows you to display call activity for a single supported call category type, if desired, by using the category keyword with one of the optional keywords.

The Call Tracker feature is enabled by entering the calltracker enable command. If there is no call on the specified port, the information of the most recent call is displayed. The show calltracker active command shows all calls, regardless of type, unless specified by the category option field.

(For detailed information about the Call Tracker feature, refer to the Cisco IOS Call Tracker feature module.)

Examples

The following example shows Call Tracker activity for modem calls:

Router# show call calltracker active category modem

-------------------------- call handle=0000000058 --------------------------

status=Active, service=PPP, origin=Answer, category=Modem

DS0 slot/cntr/chan=0/0/22, called=71071, calling=6669999

userid=maverick5200, ip=172.19.4.2, mask=255.255.255.0

setup=10/16/1999 18:29:20, conn=0.10, phys=17.00, service=24.71, authen=24.71

init rx/tx b-rate=28800/33600, rx/tx chars=0/0

resource slot/port=1/1, mp bundle=0, charged units=0, account id=75

idb handle=0x6185B968, tty handle=0x612F8598, tcb handle=0x0

----------------------------------------------------------------------------

protocol: last=LAP-M, attempted=LAP-M

compression: last=V.42bis-Both, supported= V.42bis-RX V.42bis-TX

standard: last=V.34+, attempted=V.34+, initial=V.34+

snr=35 dB, sq=3, rx/tx level=-16/-15 dBm

phase jitter: freq=0 Hz, level=0 degrees

far end echo level=-83 dBm, freq offset=0 Hz

phase roll=-99 degrees, round-trip delay=1 msecs

digital pad=None dB, digital pad comp=0

rbs pattern=0, constellation=16 point

rx/tx: symbol rate=3429/3429, carrier freq=1959/1959

rx/tx: trellis code=0/0, preemphasis index=6/0

rx/tx: constellation shape=Off/On, nonlinear encode=Off/On

rx/tx: precode=Off/On, xmit level reduct=2/2 dBm

rx/tx: chars=0/0, general info=0x0

rx/tx: link layer chars=0/0, NAKs=0/0

error corrected: rx/tx=0/0, rx bad=0

ec retransmissions=0, retransmitted frames=0

rx/tx ppp slip=0/0, bad ppp slip=0

rx/tx b-rate: last=28800/33600, lowest=28800/33600, highest=28800/33600

phase 2 projected max rx b-rate: client=19200, host=24000

phase 4 desired rx/tx b-rate: client=28800/33600, host=28800/33600

retrains: local=0, remote=0, failed=0

speedshift: local up/down=0/0, remote up/down=0/0, failed=0

v110: rx good=0, rx bad=0, tx=0, sync lost=0

SS7/COT status=0x00

v90: status=No Attempt, client=(n/a), failure=None

rx/tx: max neg I frame=128/128, neg window=15/15

v42bis size: dictionary=1024, string=64

T401 timeouts=0, tx window closures=0, rx overruns=0

test err=0, reset=0, v0 synch loss=0

mail lost: host=0, sp=0

duration(sec)=16, disc reason=0x0

disc text=(n/a)

                --------5---------10--------15--------20--------25--------30

line shape  : 0x1920212120202120202021202020202020202020201F1D191100

v8bis capab : 0x00000000000000000000000000000000000000000000

v8bis mod sl: 0x00000000000000000000000000000000000000000000

v8 jnt menu : 0x01E0C14513942A000000000000000000000000000000

v8 call menu: 0x01C14513942A00000000000000000000000000000000

v90 training: 0x00000000

v90 sgn ptrn: 0x00000000

state trnsn : 0x00010203041020404243FF00000000000000000000000000000000000000

                0000

portwre diag: 0x00000000000000000000000000000000

phase 2 info: 0x010000F4EF221FF37E0001E4EFA21FF2E30001A4EF980101B7CF98003C00

                00000024EF40000502160AE0304DFFFECE07A707A70D650D6500

phase 4 info: 0x01834070808340708000

Related Commands

Command	Description
show calltracker handle	Displays the detailed data stored within Call Tracker for a specific call having specified unique call handle identifier.
show calltracker history	Displays all the information stored within the Call Tracker history database table for the most recent disconnected calls.

show port configuration

To display the configuration information for specified ports or the specified port range, use the
show port configuration command in privileged EXEC mode.

Cisco AS5400 with NextPort DFC

show port config {slot | slot/port}

Cisco AS5800 with Universal Port Card

show port config {shelf/slot | shelf/slot/port}

Syntax Description

slot	All ports on the specified slot. For the AS5400, slot values range from 0 to 7.
slot/port	All ports on the specified slot and SPE. For the AS5400, slot values range from 0 to 7 and port values range from 0 to 107.
shelf/slot	All ports on the specified shelf and slot. For the AS5800, shelf values range from 0 to 1 and UPC slot values range from 2 to 11.
shelf/slot/port	All ports on the specified SPE. For the AS5800, shelf values range from 0 to 1, slot values range from 2 to 11, and port values range from 0 to 323.

Defaults

No default behavior or values

Command Modes

Privileged EXEC

Command History

Release	Modification
12.1(1)XD	This command was introduced on the Cisco AS5400.
12.1(3)T	This command was supported on the Cisco AS5400 and Cisco AS5800.
12.2(2)XA	This command was supported on the Cisco AS5350.
12.2(2)XB1	This command was supported with Cisco IOS Release 12.2(2)XB.
12.2(11)T	This command was integrated into Cisco IOS Release 12.2(11)T.

Usage Guidelines

The port should have an associated active session when the show port configuration command is entered.

Examples

The following example shows output from the show port configuration command on the Cisco AS5400 with NextPort dial feature card (DFC). This example shows port configuration for the modem service port slot 1, port 0.

Router# show port configuration 1/0

Service Type                              :Modem service 

Originate/Answer Mode                     :Answer 

Data Bits Selection                       :8 

Parity Selection                          :No Parity 

Stop bits Selection                       :1 

V.42 ODP generation                       :Enabled 

EC Autodetect Time-out                    :5000 ms 

Protocol Negotiation Time-out             :10000 ms 

Protocol Negotiation Fallback character   :13 

Protocol Negotiation Retransmission Limit :12 

EC Min, Max Octets Frame length           :256 

Data Compression                          :V.44Tx   V.44Rx

ARA Error Correction                      :ARA1.0 & ARA2.0 Disabled 

V.42 Error Correction                     :V.42(LAP-M) Originate&Answer enabled 

MNP Error Correction                      :MNP Originate&Answer enabled 

Link Protocol Fallback                    :Async Framing (Start/Stop/Parity) 

Calling Tone                              :Disabled 

Guard Tone                                :Disabled 

Modem Standard                            :V.90 Automode 

Max Non-PCM Connect Rate                  :33600 bps 

Min Non-PCM Connect Rate                  :300 bps 

Max PCM Connect Rate                      :60000 bps 

Min PCM Connect Rate                      :28000 bps 

Signal Quality Threshold                  :Bit Errors >= 1:1000 cause recovery 

Fallback/Fallforward Squelch Timer        :500 ms 

Fall Forward Timer                        :10000 ms 

Fall Back Timer                           :500 ms 

Terminate Time-out                        :20 secs 

Wait for Data Mode Time-out               :60 secs 

Lost Carrier To Hang-up Delay             :1400 ms 

PCM Transmit Level Setting                :-13 dBm 

Retrain Limit                             :4 

V.34 Max Symbol Rate                      :3429 Baud 

V.34 Min Symbol Rate                      :2400 Baud 

V.34 Carrier Frequency                    :Auto Carrier Selection 

V.34 Preemphasis Filter Selection         :11 

+++ Escape Detection                      :Enabled-in-Originate-Mode-Only 

AT Command Processor                      :Enabled 

Call Setup Delay                          :0 ms 

Automatic Answer Delay                    :2 secs 

Escape Detection Character                :ASCII 43 (+) 

Carriage Return Character                 :ASCII 13 (CR) 

Line Feed Character                       :ASCII 10 (LF) 

Backspace Character                       :ASCII 8 (BS) 

Pause Before Blind Dialing                :2 secs 

Comma Dial Modifier Time                  :2 secs 

MOH Timeout                   :No limit

QC Configuration                :Enabled ANSpcm Level -12dBm

V.44 Max Tx Codewords             :256

V.44 Max Rx Codewords             :256

V.44 Max Tx String Length           :32

V.44 Max Rx String Length           :32

V.44 Max Tx History Size            :256

V.44 Max Rx History Size            :256

The following example shows port configuration information for a digital service port slot 2, port 23 on the Cisco AS5800 with universal port card.

Router# show port configuration 1/8

Shelf/Slot/SPE/Port -- 1/8/27/165

Service Type                              : Modem service

Originate/Answer Mode                     : Answer

Data Bits Selection                       : 8

Parity Selection                          : No Parity

Stop bits Selection                       : 1

V.42 ODP generation                       : Enabled

EC Autodetect Time-out                    : 5000 ms

Protocol Negotiation Time-out             : 10000 ms

Protocol Negotiation Fallback character   : 13

Protocol Negotiation Retransmission Limit : 12

EC Min, Max Octets Frame length           : 256

Data Compression                          : V.42bis or MNP5

ARA Error Correction                      : ARA1.0 & ARA2.0 Disabled

V.42 Error Correction                     : V.42(LAP-M) Originate&Answer enabled

MNP Error Correction                      : MNP Originate&Answer enabled

Link Protocol Fallback                    : Async Framing (Start/Stop/Parity)

Calling Tone                              : Disabled

Guard Tone                                : Disabled

Modem Standard                            : V.90 Automode

Max Non-PCM Connect Rate                  : 33600 bps

Min Non-PCM Connect Rate                  : 300 bps

Max PCM Connect Rate                      : 60000 bps

Table 5 show port configuration Field Descriptions 

Field	Description
Service Type	Digital or analog service type.
Originate/Answer Mode:	Answer or originate. Default is answer.
Data Bits Selection:	7, 8, or 9 data bits. Default is 8.
Parity Selection:	0 = no parity, 1 = even parity, 2 = odd parity. Default is no parity.
Stop Bits Selection:	1 or 2 stop bits. Default is 1 stop bit.
V.42 ODP generation:	Disabled or generate ODP sequence when originating a V.42 call. Default is Generate ODP sequence when originating a V.42 call.
Error Correction Autodetect Time-out value:	Maximum period during which the modem will run an automated detection machine upon the incoming data. Default is 5000 ms.
Protocol Negotiation Time-out value:	Maximum wait for error correction protocol negotiation before fallback. Default is 10000 ms.
Protocol Negotiation Fallback Character:	0 to 127. Default is 13.
Protocol Negotiation Retransmission Limit:	0 = Do not disconnect on excessive retransmission; 1 to 255 = number of successive retransmissions to cause disconnect. Default is 12.
Error Correction Frame Length:	Buffer length; 64 to 1024 octets of data. Default is 256.
Data Compression:	Disabled, V.42bis, MNP5, or V.42bis or MNP5 (V.42 has precedence). Default is V.42bis or MNP5 (V.42 has precedence).
ARA Error Correction:	ARA1.0 & ARA2.0 Disabled, Enabled for Answer only, Enabled for Answer originate ARA1.0, and Enabled for Answer originate ARA2.0. Default is Enabled for Answer only.
V.42 Error Correction:	V.42(LAP-M) Disabled, V.42(LAP-M) Originate & Answer enabled. Default is disabled.
MNP Error Correction:	MNP Disabled or MNP Originate and Answer enabled. Default is MNP Originate and Answer enabled.
Link Protocol Fallback:	Asynchronous framing (Start/Stop/Parity), Synchronous framing (Raw 8 bits to DSP), or Disconnect (Hang-up). Default is Asynchronous framing (Start/Stop/Parity).
DSP processor MVIP TDM slice:	0 to 15.
Calling Tone:	Disable or Send calling tone. Default is disable.
Guard Tone:	Guard tone disabled, Use Guard tone (V.22 & V.22bis only). Default is disabled.
Modem Standard:	V.34bis Automode with terbo, V.34bis Automode skip terbo, V.32 terbo Automode, V.32bis Automode, V.22bis Automode, or K56Flex 1.1. Default is V.34bis Automode with terbo.
Max. Connect Rate:	75 to 56000 bps.
Min. Connect Rate:	75 to 56000 bps.
Signal Quality Threshold:	No action on bit errors, Bit Errors >=1:100 cause recovery, Bit Errors >=1:1000 cause recovery, Bit Errors >=1:10000 cause recovery, Bit Errors >=1:100000 cause recovery, or Bit Errors >=1:1000000 cause recovery. Default is 1:1000.
Fallback/Fallforward Squelch Timer:	Time to delay after a speed shift before allowing another speed shift. Default is 500 ms.
Fall Forward Timer:	Elapsed time with continuous good signal quality to cause a fall forward. Default is 10000 ms.
Fall Back Timer:	Elapsed time with bad signal quality to cause a fallback. Default is 500 ms.
Terminate Time-out:	Elapsed time after a disconnect request before forcing a link disconnect. During this period, the modem sends buffered data and then clears down the link. Default is 20 seconds.
Wait for Data Mode Time-out:	Maximum time during link establishment before disconnection. Default is 40; 60 for K56Flex.
Lost Carrier To Hang-up Delay:	Maximum time without a carrier to cause the link disconnect. Default is 1400 ms.
Transmit Level Setting:	6dBm, 7dBm, 8dBm, -20dBm, or -21dBm. Default is 9 dBm.
Retrain Limit:	Maximum successive failed retrains to cause the link to disconnect. Default is 4.
V.34 Max. Symbol Rate:	2400 baud, 2743 baud, 2800 baud, 3000 baud, 3200 baud, or 3429 baud. Default is 3429 baud.
V.34 Min. Symbol Rate:	2400 baud, 2743 baud, 2800 baud, 3000 baud, 3200 baud, or 3429 baud. Default is 2400 baud.
V.34 Carrier Frequency:	Low Carrier, High Carrier, or Auto Carrier Selection. Default is High Carrier.
V.34 Preemphasis Filter Selection:	0 to 10 = a selected filter; 11 = Automatic Preemphasis Selection. Default is 11.
Tx and Rx Signaling Type:	NULL signaling, MF signaling, DTMF signaling, Lower band R2 signaling, Upper band R2 signaling, or R1 signaling. Default is NULL signaling.
Call Progress Tone Detection:	No tone detection, Dial tone detection, Ring-Back tone detection, or Busy tone detection. Default is no tone detection.
+++ Escape Detection:	Disabled, Enabled, or Enabled-in-Originate-Mode-Only. Default is Enabled-in-Originate-Mode-Only.
AT Command Processor:	Disabled or Enabled. Default is disabled.
Call Set Up Delay:	No delay before link initiation, delay value (1 to 255). Default is no delay.
Automatic Answer:	Answer immediately, delay value (1 to 255 seconds). default is 1 second.
Escape Detection Character:	ASCI value (0 to 127). Default is 43.
Carriage Return Character:	ASCI value (0 to 127). Default is 13.
Line Feed Character:	ASCI value (0 to 127). Default is 10.
Backspace Character:	ASCI value (0 to 127). Default is 8.
Pause Before Blind Dialing:	2 to 255 seconds. Default is 2.
Wait For Carrier After Dial:	Wait for data mode timeout.
Comma Dial Modifier Time:	2 to 255 seconds. Default is 2.

Related Commands

Command	Description
show port operational-status	Displays the operational status of the specified ports or a specified range of ports.

show port modem log

To display the events generated by the modem sessions, use the show port modem log command in privileged EXEC mode.

Cisco AS5400 with NextPort DFC

show port modem log [reverse slot/port] [slot | slot/port]

Cisco AS5800 with Universal Port Card

show port modem log [reverse shelf/slot/port] [shelf/slot | shelf/slot/port]

Syntax Description

reverse	(Optional) Displays the modem port history event log with the most recent event first.
slot	(Optional) All ports on the specified slot. For the AS5400, slot values range from 0 to 7.
slot/port	(Optional) All ports on the specified slot and SPE. For the AS5400, slot values range from 0 to 7 and port values range from 0 to 107.
shelf/slot	(Optional) All ports on the specified shelf and slot. For the AS5800, shelf values range from 0 to 1 and UPC slot values range from 2 to 11.