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September 29, 2000
These release notes describe Cisco CallManager Release 2.4(5). Use these release notes in conjunction with Installing Cisco CallManager Release 2.4 on the Cisco Media Convergence Server, the Cisco Voice Products documentation located on Cisco Connection Online (CCO), and the Cisco Documentation CD-ROM.
These release notes discuss the following topics:
Cisco CallManager is a network business communication system providing high-quality telephony over IP networks. Cisco CallManager enables the conversion of conventional, proprietary circuit-switched PBXs to multi-service, open LAN systems.
This section lists the system requirements for installing Cisco CallManager.
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Note The following system hardware requirements are for systems with 50 phones or less. Systems with more phones require a faster processor. |
A Channel Service Unit (CSU) is required if the Cisco Access Digital Gateway is connected to a telecommunications company or ISDN PRI demarcation point. If the gateway is connected to a PBX, a CSU may be required depending on the cable length. Consult the PBX documentation for maximum length requirements for connections without CSU support.
To determine the software release and version number of Cisco CallManager currently running on your system, perform these steps:
Result: The Welcome screen is displayed.
Step 2 Select About.
Result: The software release version is displayed. You can click the Details button to learn more information about the software release numbers.
This section contains information about installing Cisco CallManager Release 2.4(5) from the Cisco Connection Online (CCO) software download site and upgrading it to a more recent release. For a complete description of Cisco CallManager, see the appropriate online documentation for your release of the software.
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Note These instructions only apply to installations and upgrades from the Cisco Connection Online (CCO) software download site. Refer to Installing Cisco CallManager Release 2.4 on the Cisco Media Convergence Server for instructions on how to install and configure Cisco CallManager Release 2.4 on a Cisco Media Convergence Server. |
Perform the following steps to download and install the Cisco CallManager software:
Step 2 If you are upgrading a previous release of Cisco CallManager, make a backup copy of the database file SelsiusData.mdb. Then stop all Cisco CallManager processes. For instructions on starting and stopping Cisco CallManager, refer to the appropriate online documentation for your current release of the software.
Step 3 Before starting the installation, review the latest release notes for information about system requirements, caveats, new features, and enhancements.
Step 4 Double-click on the downloaded Cisco CallManager executable file to begin the installation. Follow the online prompts.
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Note If you want to use any optional components such as a Conference Bridge, you must install the appropriate Plug-In software during installation of Cisco CallManager. Even if you are performing an upgrade of a system that already has the optional Plug-Ins installed, you must install them again to pick up the latest changes in the new release of the software. |
This section lists the features that are new or have changed for Cisco CallManager, up to and including Release 2.4(5).
Cisco CallManager Release 2.4(5) is a maintenance release. No new features have been added. This release resolves the Cisco WebAttendant client installation problem (CSCdr83330). The Cisco WebAttendant client can now be installed successfully on Windows 95/98 operating systems. Refer to the "Caveats" section for information about open Caveats for this release.
The following change was made to Cisco CallManager Release 2.4(4). Refer to the "Caveats" section for information about open Caveats for this release.
The DtSilenceFlag setting in the Cisco CallManager scm.ini file controls whether or not silence is sent while a caller waits for the phone to be answered at the other end. When it is set to False (disabled), the audio stream is sent on call proceeding instead of waiting for a connect from the other end. When it is set to True, silence is sent until a connect is received from the phone at the other end. For Cisco CallManager Release 2.4(4), the default setting for DtSilenceFlag has been changed to 0 (disabled).
There is, however, one side effect that occurs when DtSilenceFlag is set to 0 (disabled). When DtSilenceFlag is disabled and you are calling an analog phone, you may hear loopback (echo) of your audio until the phone on the other end is answered.
To eliminate this echo, you can change the default setting of DtSilenceFlag to 1 (enabled).
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Caution Setting DtSilenceFlag to 1 (enabled) can result in one-way audio on 911 calls, depending on the local carrier's configuration of the Central Office switch. The problem will only occur if the 911 switch fails to send a connect. If the 911 switch fails to send a connect, the calling phone continues to send silence, and the audio stream from the calling phone is never sent. Therefore, it is strongly recommended that you schedule a test 911 call with your 911 service provider to verify that this problem does not occur. The test scenario should include the following steps: 1. Schedule a test call with your 911 service provider during off-peak hours. 2. Make sure that the test call will be routed over a Cisco Access Digital Trunk Gateway. 3. Enable the DtSilenceFlag parameter. 4. Make the 911call. 5. If the 911 operator can hear you, the test is passed, and you can leave the DtSilenceFlag setting enabled. If not, disable it immediately. |
Perform the following steps only if you wish change the default setting of DtSilenceFlag to enable sending of silence:
Step 2 Browse to the scm.ini file on the CallManager server and open it. If you accepted the default location during installation of Cisco CallManager, this file will be located in C:\Program Files\Cisco\Bin.
Step 3 Locate the following line:
DtSilenceFlag=0 ; 0 = disable silenceStep 4 Change the setting from 0 to 1. The line should now read:
DtSilenceFlag=1 ; 0 = disable silenceStep 5 Save your changes and close the text editor.
DtSilenceFlag is set to 1, and silence is enabled.
Admission control helps maintain a desired level of voice quality over a network link by limiting the number of calls that can be active on that link at any one time. Using Cisco CallManager Administration, you can specify the total amount of bandwidth allocated for voice communications over each link in your network, thus limiting the number of calls allowed on each link. Admission control applies only to networks with a hub-and-spoke (or star) topology. Admission control does not guarantee a particular level of voice quality.
When using a Cisco Access Digital Gateway DT-24+/DE-30+, callers on the PSTN side of the connection might sometimes hear echo. You can reduce or eliminate this echo by adjusting the audio levels (pad settings) for the gateway.
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Note If the echo problem is not on the PSTN side of the connection, do not change the default pad settings on the Cisco Access Digital Gateway DT-24+/DE-30+. |
Possible causes of the echo are:
You should adjust the audio levels on the Cisco Access Digital Gateway DT-24+/DE-30+ only if callers on the PSTN side of a connection are experiencing an echo problem. Cisco recommends that you use a telecom test set on the PRI to verify that the audio levels are indeed out of telco specification, and then add gain or loss accordingly. If you do not have the appropriate test equipment, or if you do not have expertise with such equipment, you can try different pad settings and make test calls until the echo is reduced to an acceptable level on the PSTN caller side.
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Note Do not adjust the audio levels of the Cisco Access Digital Gateway DT-24+/DE-30+ if your test equipment indicates that the trunk line from the central office is out of specification or if callers are experiencing echo only when connected to a particular central office or PBX. In both these cases, have your central office make the appropriate adjustments to the audio levels on the ISDN PRI. |
Adjusting the audio levels on the Cisco Access Digital Gateway DT-24+/DE-30+ requires the following software:
Default pad settings for the D003G024 load are:
| TX | RX | |
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DE-30+ | -6dB | -4dB |
DT-24+ | 0dB | 0dB |
To adjust the audio levels on the Cisco Access Digital Gateway DT-24+/DE-30+ using the DickTracy utility, perform the following steps:
Step 2 Using Cisco CallManager Administration, set the Load ID to D003G024 for the Cisco Access Digital Gateway DT-24+/DE-30+ in question. Then click Reset for that gateway.
Step 3 Allow the gateway time to re-register with Cisco CallManager, then use the Microsoft Performance Monitor to verify that the gateway has registered.
Step 4 If the DickTracy utility is not already installed on the server where Cisco CallManager is running, copy the file DickTracy.exe from Cisco CallManager release 2.4(3) to any location on the hard disk of the server.
Step 5 Run the DickTracy utility.
Step 6 In the DickTracy window, select File>Connect.
Step 7 Enter the IP address of the Cisco Access Digital Gateway DT-24+/DE-30+, and always use TCP port 2005. Then click OK.
Step 8 Select Options>Send Cmd to open the DickTracy command window. It may take 15 to 30 seconds for the gateway to respond and for the command window to open.
Step 9 In the DickTracy command window, enter 3 for the Task ID. Then enter other commands as needed. The command line syntax is as follows:
show pads | Display current settings. |
set txpad[32] NN | Set transmit pad value. (Brackets are required.) |
set rxpad[32] NN | Set receive pad value. (Brackets are required.) |
set nvram | Burn values to NVRAM. (Required to save the new settings.) |
| NN | Pad value |
00 | mute |
01 | -31dB |
02 | -30dB |
03 | -29dB |
. | . |
29 | -3dB |
30 | -2dB |
31 | -1dB |
32 | 0dB |
33 | +1dB |
34 | +2dB |
35 | +3dB |
. | . |
62 | +30dB |
63 | +31dB |
New pad settings take effect on the next call made on each B-channel. Calls in progress are not affected by setting changes.
To use all B-channels of the Cisco Access Digital Gateway DT-24+/DE-30+ for G.723 traffic, you must set the MaxNumberOf723Calls parameter in the scm.ini file. The MaxNumberOf723Calls parameter specifies the maximum number of G.723 calls that the gateway can send or receive. Set MaxNumberOf723Calls to 23 for the Cisco Access Digital Gateway DT-24+, or set it to 29 for the Cisco Access Digital Gateway DE-30+.
There are three new Windows Registry entries that you can use to configure the Cisco Messaging Interface. If you want to use them, you must create the Registry entries prior to installing the Cisco Messaging Interface. Upon installation, the Cisco Messaging Interface reads these Registry entries and uses them to configure the way it processes incoming and outgoing messages. If it cannot find these Registry entries, the Cisco Messaging Interface operates in default mode.
The Registry entries for configuring the Cisco Messaging Interface are located in:
HKEY_LOCAL_MACHINE/Software/Selsius Systems Inc./Selsius Unified Messaging Interface/
The available Registry entries for the Cisco Messaging Interface are:
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Note If you change any of these Windows Registry entries after installing the Cisco Messaging Interface, you must use Cisco Process Control to restart the Cisco Messaging Interface. |
Cisco CallManager provides debug trace functionality for advanced error handling. The debug trace flags are most commonly used by the Cisco Technical Assistance Center (TAC) to resolve problems with Cisco CallManager. You can access the trace flags through Cisco CallManager Administration by selecting Control Center and then clicking the Show button for Cisco CallManager Debug Trace Flags.
Cisco CallManager now treats all DTMF signals as out-of-band, and it is now possible to pass digits in both directions on H.323 type devices.
Enhanced 911 (E911) service is available for your Cisco IP Telephony system. Cisco CallManager provides the appropriate calling line ID information and signaling required for E911. Connection to E911 service providers is available through third-party sources. For more information on connecting your Cisco IP Telephony system to E911 services, visit the Cisco web site at http://www.cisco.com.
License Management has been disabled in Cisco CallManager for release 2.4(3) and 2.4(4). Please ignore any prompts from Cisco CallManager Administration that ask you to enter License Management information.
When you answer a multi-line phone (take the phone off-hook), the default behavior is for the phone to select the ringing line automatically. You can modify this behavior so that the phone always selects the prime line (line 1) when you go off-hook. To enable prime line selection for all phones, set the AlwayUsePrimeLineFlag to 1 in the SCM.INI file. If prime line selection is enabled, users must always press a line button to select a line other than the prime line, even if there is an incoming call on that other line.
You now have the option to control Media Termination Point (MTP) parameters by changing the settings in the Windows Registry. For details, see "Configuring the Media Termination Point" in the online System Guide.
Remote serviceability enables Cisco CallManager to be serviced from a remote location while maintaining the security of your site. This release of Cisco CallManager implements two features for remote serviceability:
The Device Wizard in Cisco CallManager Administration contains a new option for resetting a Cisco IP Phone while you are configuring the phone in the database. After you enter the configuration data for the phone and click Finish, two new buttons appear:
If the phone is not yet physically installed on the network, you can click OK, reset now without interrupting call processing. If the phone is already installed on the network, then you might want to click OK, reset later to avoid interrupting call processing for that phone. Later, when the phone is not busy, you can reset it by clicking the Reset button for that phone in Cisco CallManager Administration, by pressing **#** on the phone, or by reconnecting the phone to the network.
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Note Changes or additions to call forwarding information for a phone do not take effect in Cisco CallManager until you reset the phone. In some cases, Cisco CallManager might loop an incoming call back to its source if the destination phone has not been configured and reset properly and if the incoming call matches a routing pattern that routes calls back out. To avoid this problem, choose route patterns carefully so that they are unique, and reset each phone as soon as possible after configuring it in the Cisco CallManager database so that the call forwarding information can take effect. |
The party placed on hold, transfer, or call park hears an intermittent tone once every 10 seconds. Currently there is no tone on hold, transfer, or call park for calls going through a Media Termination Point. Also, if the party on hold, transfer, or call park activates a feature such as hold, the tone is not retained for either party on the call.
Cisco uOne is a voice messaging system that combines with Cisco CallManager to provide voice messaging services over an IP network. Cisco uOne is sold separately from Cisco CallManager. Cisco uOne is currently available only for the Cisco Media Convergence Server 7830 and only in the North American market.
Wherever possible, Cisco uOne supports industry standard internet messaging protocols such as LDAP, IMAP, MIME, SMTP and HTTP. For this release, Cisco uOne provides the following features:
You can install only one voice messaging system (either Cisco uOne or third-party voice mail) per installation of Cisco CallManager.
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Note If you are using Cisco uOne, please ignore the voice mail information in the Cisco CallManager online System Guide and refer instead to the latest Cisco uOne documentation. |
The latest software upgrades and release notes are available on Cisco Connection Online (CCO) at:
http://www.cisco.com/kobayashi/sw-center/internet/callmgr/callmgr.html
Cisco Year 2000 product compliance information can be found at:
http://www.cisco.com/warp/public/752/2000/
A local copy of the online Help is installed with Cisco CallManager, and you can access it by clicking Start>Programs>Cisco CallManager>Cisco Help>System Guide. The System Guide is also available on the Web at:
http://www.cisco.com/documentation/ccm/v24/index.htm
You should perform regular system backups as described in the topic Backing Up the System in the online System Guide at:
http://www.cisco.com/documentation/ccm/v24/index.htm
For instructions on backing up the system, select the following book and topic in the menu:
Cisco CallManager>Backing up the system.
This section contains unresolved caveats for this release of Cisco CallManager. Caveats describe unexpected behavior or defects in Cisco CallManager software and related hardware.
This section describes possibly unexpected behavior by Cisco CallManager Release 2.4(4).
This section describes possibly unexpected behavior by Cisco CallManager Release 2.4(3). Unless otherwise noted, these caveats apply to all Cisco CallManager 2.4 releases up to and including Cisco CallManager Release 2.4(3).
This section describes possibly unexpected behavior by Cisco CallManager Release 2.4(2b). Unless otherwise noted, these caveats apply to all Cisco CallManager 2.4 releases up to and including Cisco CallManager Release 2.4(5).
This section describes possibly unexpected behavior by Cisco CallManager Release 2.4(1). Unless otherwise noted, these caveats apply to all Cisco CallManager 2.4 releases up to and including Cisco CallManager Release 2.4(5).
This section describes possibly unexpected behavior by Cisco CallManager Release 2.3(1b) and 2.3(2). Unless otherwise noted, these caveats apply to all Cisco CallManager releases up to and including Cisco CallManager Release 2.4(5).
This section describes possibly unexpected behavior by Cisco CallManager Release 2.2. Unless otherwise noted, these caveats apply to all Cisco CallManager releases up to and including Cisco CallManager Release 2.4(5).
Troubleshooting is provided in the locally installed Help or the online System Guide at:
http://www.cisco.com/documentation/ccm/v24/index.htm
Click the Troubleshooting book in the menu to see the troubleshooting topics.
You can access information about Cisco CallManager Release 2.4 by using the System Guide on the Web instead of the locally installed version available from the Start menu. To access the Web version of the System Guide, open a web browser and type the URL:
http://www.cisco.com/documentation/ccm/v24/index.htm
The latest software upgrades and release notes are available on Cisco Connection Online (CCO) at:
http://www.cisco.com/kobayashi/sw-center/internet/callmgr/callmgr.html
You can access the most current Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.
Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM is updated monthly. Therefore, it is probably more current than printed documentation. The CD-ROM package is available as a single unit or as an annual subscription.
Registered CCO users can order the Documentation CD-ROM and other Cisco Product documentation through our online Subscription Services at http://www.cisco.com/cgi-bin/subcat/kaojump.cgi.
Nonregistered CCO users can order documentation through a local account representative by calling Cisco's corporate headquarters (California, USA) at 408 526-4000 or, in North America, call 800 553-NETS (6387).
Cisco provides Cisco Connection Online (CCO) as a starting point for all technical assistance. Warranty or maintenance contract customers can use the Technical Assistance Center. All customers can submit technical feedback on Cisco documentation using the web, e-mail, a self-addressed stamped response card included in many printed docs, or by sending mail to Cisco.
Cisco continues to revolutionize how business is done on the Internet. Cisco Connection Online is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information and resources at anytime, from anywhere in the world. This highly integrated Internet application is a powerful, easy-to-use tool for doing business with Cisco.
CCO's broad range of features and services helps customers and partners to streamline business processes and improve productivity. Through CCO, you will find information about Cisco and our networking solutions, services, and programs. In addition, you can resolve technical issues with online support services, download and test software packages, and order Cisco learning materials and merchandise. Valuable online skill assessment, training, and certification programs are also available.
Customers and partners can self-register on CCO to obtain additional personalized information and services. Registered users may order products, check on the status of an order and view benefits specific to their relationships with Cisco.
You can access CCO in the following ways:
You can e-mail questions about using CCO to cco-team@cisco.com.
The Cisco Technical Assistance Center (TAC) is available to warranty or maintenance contract customers who need technical assistance with a Cisco product that is under warranty or covered by a maintenance contract.
To display the TAC web site that includes links to technical support information and software upgrades and for requesting TAC support, use www.cisco.com/techsupport.
To contact by e-mail, use one of the following:
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In North America, TAC can be reached at 800 553-2447 or 408 526-7209. For other telephone numbers and TAC e-mail addresses worldwide, consult the following web site: http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml.
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