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September 2000
This configuration note describes differences in Cisco CallManager 3.0 as it is supported on the Cisco Integrated Communications System (ICS) 7750 and includes caveats and other issues related to Cisco CallManager 3.0 on the ICS 7750. Use this configuration note in conjunction with the following documentation:
This configuration note includes the following topics:
The Cisco ICS 7750 is an advanced IP telephony solution that integrates network components into one system. The ICS 7750 8-slot chassis contains the following components:
The SPE runs Windows 2000 with the Cisco CallManager 3.0, the Microsoft SQL 7.0, and the ICS 7700 System Manager. These applications and databases are installed on the hard-disk component of the SPE during the manufacturing process. Cisco CallManager 3.0 provides the call-processing functions in the Cisco ICS 7750 and is tightly integrated with the ICS 7700 System Manager and the MS SQL 7.0. These applications are integrated and customized specifically for a Cisco ICS 7750 system.
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Note Use only the Cisco CallManager 3.0 that is customized for the Cisco ICS 7750 and pre-installed on the SPE. Other Cisco CallManager releases are not integrated with the ICS 7700 System Manager. The Cisco CallManager 3.0(2d) maintenance release is included in the software for the initial release of the Cisco ICS 7750 product. |
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Note Do not install any other application software on the Cisco CallManager SPEs. If you want to run additional applications on the ICS 7750, you must use application-grade SPEs. |
The purpose of this document is to describe the feature differences and restrictions in Cisco CallManager 3.0 as implemented on this release of the Cisco ICS 7750.
The Cisco ICS 7750 has a single administration interface, the ICS 7700 System Manager. This web-based system management tool provides access to Cisco CallManager as well as to the other router and switch databases. To access Cisco CallManager, you must log into the ICS 7700 System Manager.
To use the Cisco CallManager Administration interface, follow this procedure:
a. On the PC, launch a web browser.
b. Enter the System Manager URL. For example:
http://<primary SPE IP address>/ics
c. Log in as Administrator (userID admin), and enter your password or the default password changeme.
Step 2 Click the Configure tab on the System Manager home page.
Step 3 Click the CallManager tab to display the Cisco CallManager Administration home page.
Step 4 To verify the version of Cisco CallManager installed on the ICS 7750, click the Details button. Note both the Cisco Call Manager System and Cisco Call Manager Administration version numbers.
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Note You need the Cisco CallManager version information when troubleshooting or reporting problems to the Cisco Technical Assistance Center (TAC). |
The following sections describe how Cisco CallManger appears and behaves differently when it is installed on the Cisco ICS 7750.
The first release of the Cisco ICS 7750 is targeted for mid-market businesses and enterprise branch offices that have under 200 phones. This product cannot participate in Cisco CallManager LAN clusters for N+1 redundancy and loadsharing as is possible on the Cisco Media Convergence Server
(MCS 783X) platform. As a result, each Cisco ICS 7750 runs its own Cisco CallManager application and must be administered independently by using the System Manager interface.
However, Cisco CallManager on an ICS 7750 can interoperate with a multisite MCS 783x Cisco CallManager network. Using Voice over IP (VoIP) technology, extension number dialing is available between all the systems within the network provided that the network has a unified dialing plan.
Figure 1 shows how each separate Cisco ICS 7750 system using Cisco CallManager 3.0 can be integrated with a campus MCS 783x system that has clustered Cisco CallManagers.
Cisco CallManager redundancy is handled differently on the Cisco ICS 7750 than in a clustered environment. To provide call-processing redundancy, a second SPE, running a second instance of Cisco CallManager, is installed in the ICS 7750 chassis. The second Cisco CallManager database is a mirror image of the primary one. Because only one Cisco CallManager can be active at a time, the call-processing load between Cisco CallManager systems cannot be shared. If a failover occurs on the primary SPE, the Cisco CallManager on the secondary SPE takes over all call-processing and database functions. Figure 2 shows how Cisco CallManager redundancy is implemented on Cisco ICS 7750.
On the Cisco ICS 7750, data replication is managed by the Fault Management Module (FMM), an internal software module in System Manager, when an additional SPE is installed in an ICS 7750 chassis. The additional SPE is loaded with the Cisco CallManager 3.0, the MS SQL, and the System Manager so that it can be a backup or standby server. The designated primary SPE System Manager recognizes the second SPE as the standby processor whenever it establishes connection with a second SPE. Of the applications on the standby SPE, only the System Manager modules, the FMM Server and the FMM Guardian, are active. These programs check that the primary SPE is active and synchronize the SPE databases.
There are four databases resident in each SPE:
As changes are made to any of these database tables, the databases are synchronized under the System Manager and FMM management by using the SQL data replication. The primary SPE pushes any changes to the standby SPE. No user intervention is needed, as data replication between SPE databases happens automatically. As a result, the standby SPE is constantly current with all system events and changes.
Unlike Cisco CallManager on the MCS platform, both SPEs have publisher (read/write) privileges. This is necessary in the event of a failure. For example, if the primary SPE (A) failed, the standby SPE (B), under the direction of the System Manager and FMM, immediately assumes the primary role. All system events are uninterrupted as the standby SPE (B) activates Cisco CallManager and other services to process events. In this case, there is only one active SPE; therefore, no data replication can happen.
When the failed SPE (A) becomes active and establishes connection with the active SPE (B), the System Manager and FMM directs the SQLserver.exe to resume data replication, and the standby SPE (A) is updated with all changes.
Figure 3 shows the three operational states and how data replication is handled.
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Caution It is very important that a complete data replication between SPEs takes place. Stopping or removing the primary SPE (B) before completing data replication results in a corrupted database and an inoperable system. |
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Tips Power spikes and fluctuations occurring during data replication can result in a corrupted database. To avoid these power issues, Cisco offers an external uninterruptible power supply (UPS) for the ICS 7750. |
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Tips When a secondary SPE is connected to the system, either as a new SPE or a failed SPE that becomes active, a complete SQL replication occurs. This activity can dominate the processor on the primary SPE for up to 20 minutes. To prevent interrupting telephone service, replace or install an SPE during nonbusiness (off-peak) hours. |
If there are problems with database replication, Event Manager logs are a good resource to begin the troubleshooting process.
Checking Database Replication
To verify that database replication is running, use the Terminal Services connection with the primary SPE and check if the Cisco Database Layer has started.
Step 2 Choose Start > Programs > Administration Tools > Services.
Step 3 Locate the Cisco Database Layer Monitor in the list on the right, and see if Started displays in the Status column.
Step 4 If the Status column is blank, replication between SPEs is not happening.
Restarting Database Replication
If database replication is not running, restart the FMM program to start database replication using this procedure.
Step 2 Open a Telnet session on the primary SPE by entering the following command:
telnet <SPE IP address> 5000
Step 3 Log in as a Windows 2000 administrator (username administrator) and enter your password.
Step 4 Enter the following command to stop the FMMServer on the secondary SPE:
net stop FmmServer
Step 5 Enter the following command to restart the FMMServer on the secondary SPE:
net start FmmServer
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Note If database replication does not start, refer to the Cisco ICS 7750 Release Notes. If you cannot find the information you need to correct the problem, contact the Cisco TAC for assistance. |
Verifying Database Replication Completion
To verify that database replication has completed, use the Terminal Services program and this procedure.
Step 2 To check the SQL Server, choose Start > Programs > MS SQL Server 7.0 > Enterprise Manager.
Step 3 From the tree, click the + by Microsoft SQL Servers to expand the list.
Step 4 Click the + by Server_Group_<Name> to expand the list of servers.
Step 5 Click the + by Replication Monitor to expand this list.
Step 6 Click the + by Publishers to expand this list and choose the Server_Group_<Name>.
Step 7 Look for these 4 databases:
Step 8 Right-click Replication Monitor, and choose Refresh to be sure the database information is completely updated.
Step 9 Choose CCM0300 and look for the following entries:
Snapshot | Succeeded |
Log reader | Idle |
ICS7700-xxx:xxx | Idle |
Step 10 Choose each one of the remaining databases and look for the same three entries. Database replication has successfully completed when all four databases have the above entries.
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Note If database replication did not complete successfully, use the procedure, "Restarting Database Replication". For more help on this topic, refer to the Cisco ICS 7750 Release Notes. If you cannot find the information you need, contact the Cisco TAC for assistance. |
If you receive a database (DB) error when opening Cisco CallManager, this means that the database tables have been corrupted or lost. You must restore the primary SPE with a good database. To do this, follow the procedures that are described in the "Restoring Database Records" section in the Cisco ICS 7750 Release Notes.
In this release, the ICS 7750 does not have an integrated back-up utility like the Cisco MCS Back-up Utility that is included with the MCS 783x system. To back up or restore Cisco CallManager data, you must use the procedures described in the "Backing Up Database Records" section in the Cisco ICS 7750 Release Notes.
When Cisco CallManager 3.0 is installed on the ICS 7750, the following changes have been made to menus and fields:
Service Menu
The Control Center option under the Service menu has been removed. Tasks done in the Control Center function, such as stopping or starting Cisco CallManager, are only available to technical support through the Terminal Services control panel.
System Menu > Server Configuration
In the Server Configuration page, the DNS or IP address field has the IP address for the SPE that was configured during initial system configuration. This field is read-only, unlike other instances of Cisco CallManager.
System Menu > Cisco CallManager Configuration
In the Cisco CallManager Configuration page, the Cisco CallManager Name field has the name assigned to Cisco CallManger by using this naming convention: CM_<host name>. The host name uses the name of the SPE that is running Cisco CallManager. This name is read-only, unlike other instances of Cisco CallManager.
System Menu > Cisco CallManager Group Configuration
In the Cisco CallManager Group Configuration page, the Cisco CallManager Group field has Default as the group name. The group name, Default, is read-only, unlike other instances of Cisco CallManager.
User Menu > Add a New User
When choosing Add a New User from the User menu, an error message displays. The User function for setting up a user profile, defining user preferences, and accessing the global directory is not available with the initial ICS 7750 release. You can configure user phones and devices without this information, and the phones function whether or not this information is completed. However, without user profiles, users do not have access to their user web pages for individual feature configuration.
The following sections describe the limitations to some Cisco CallManager features for the initial release of ICS 7750.
The Software Conference Bridge using the IP Voice Media Streaming Application is supported, but the ICS 7750 cannot use the hardware conference bridge device. Conference devices configured for software support only G.711 CODECS; therefore, conference calls can be set up only with other phones using G.711 compression.
Cisco CallManager 3.0 on the ICS 7750 can support up to 8 conference calls with up to 8 parties in each conference for a maximum of 64 conference users. If the maximum-number-of-users parameter is set for more than 64 conference users, this could result in a heavy load on the SPE processor and could introduce delays in call processing.
No transcoding resources for conference calls and general CODEC transactions exist for this release of the ICS 7750; therefore, you can use only G.711 compression. If you are using G.729 compression across your WAN, it is not possible to set up conference calls with other phones on the WAN.
With this release of the ICS 7750, the User Administration page is not available. As a result, no user profiles can be set up, and users cannot access user web pages to set up their own speed dial numbers or to change forwarding numbers. There is no access to the corporate directory from their telephone.
Trace is useful for monitoring system performance and troubleshooting. Using Trace adds a load on the SPE processor that degrades call-processing performance. An important consideration is to balance the amount of trace information you need with the load on the system.
In Cisco CallManager, Trace is turned off by default. If you need to use tracing to monitor the system, use the recommendations described in the Cisco IP Telephony Troubleshooting Guide for Cisco Cisco CallManager 3.0. You can find this guide at http://www.cisco.com/univercd/cc/td/doc/product/voice/c_callmg/3_0/index.htm.
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Note Refer to the "Trace" chapter in the Cisco CallManager Administration Guide for more information. |
The Cisco uOne Voice Messaging application is not available on the Cisco ICS 7750 platform with this release. To provide voice messaging on the Cisco ICS 7750, you can use the Cisco Messaging Interface (CMI) in Cisco CallManager with an external Simplified Message Desk Interface (SMDI)-compliant voice-message system such as the Octel 250. The voice-mail system must have analog ports. SMDI messages are exchanged between the Cisco CallManager and the voice-mail system through the VG200 gateway.
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Note For more information on how to configure an external voice-mail system, refer to the Cisco ICS 7750 Release Notes. |
Caveats describe unexpected behavior or defects in Cisco CallManager software releases.
For information on all caveats for Cisco CallManager 3.0, refer to the Release Notes for
Cisco CallManager 3.0(2d) at http://www.cisco.com/univercd/cc/td/doc/product/voice/c_callmg/3_0/rel_note/302drel.htm
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Note If you have an account with CCO, you can use Bug Navigator II and the DDTS number to find caveats for any release. You can reach Bug Navigator II on CCO at Software Center: Cisco IOS Software: BUG TOOLKIT: Cisco Bug Navigator II or at http://www/coscp/cp/support/bugtools/bugtool.shtml. |
| DDTS number | Description |
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CSCds20672 | After completing the restore process on a new secondary SPE and using the System Manager initial configuration program (ICSconfig) to change the IP address on the secondary SPE, ICSConfig fails with this Cisco CallManager error message. Error Type: The problem is due to the old secondary SPE host name showing up in the restored Cisco CallManager database on the new SPE. Workaround: After restoring the databases to a new secondary SPE, change the IP address in the host name file to a bogus IP address, and remove old secondary SPE entries. With these changes, you can run ICSConfig successfully. |
CSCds08033 | When logged in to the ICS 7700 System Manager and accessing the Cisco CallManager for the first time, sometimes you might get a garbled home page. Workaround: Click Reload on the browser toolbar to refresh the html page, and then it will display correctly. |
CSCdr92997 | In this release of Cisco CallManger running on ICS 7750, you cannot open the User menu. As a result, there is no way to set up Speed Dial numbers or a global directory. Workaround: None. These features are not available in this release. |
CSCds14994 | When failover occurs on a system with two SPEs and the secondary SPE takes over as primary SPE, you cannot make conference calls. Workaround: There is no workaround. |
CSCds15126 | Following an SPE failover or a change to the IP addresses of the primary and secondary SPEs, database replication might not start as expected. Workaround: Use the procedure, "Restarting Database Replication" to correct the problem. |
CSCds18930 | Following an SPE failover, you might not be able to use a Call Park number that you had used before. When failover occurs, Call Park numbers might not be released. Consequently, they are not available for reuse. Workaround: In Cisco CallManager, set up a large pool of Call Park numbers for call parking. For example, set up Call Park numbers as 9xxx, which makes 9000 to 9999 available as Call Park numbers. |
CSCds18792 | If you define multiple Cisco CallManager group names on the Cisco ICS 7750, you will not be able to run the System Manager initial configuration program (ICSconfig). Workaround: On the ICS 7750, do not configure more than one Cisco CallManager group. |
For specific troubleshooting information for Cisco CallManager 3.0, refer to the Cisco IP Telephony Troubleshooting Guide for Release 3.0. You can locate this guide at http://www.cisco.com/univercd/cc/td/doc/product/voice/c_callmg/3_0/index.htm.
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Note Cisco CallManager 3.0 Web browser requirements are Netscape Navigator 4.7 or later or Internet Explorer 5.01 or later. For help with configuring your browser properly, refer to the "Configuring Your Web Browser" section in the Cisco ICS 7750 Getting Started Guide. |
To assist you with using Cisco CallManager with the ICS 7750, you can use the resources listed in the following sections.
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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You can e-mail your comments to bug-doc@cisco.com.
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We appreciate and value your comments.
This document is to be used in conjunction with the Cisco CallManager Administration Guide.
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Using Cisco CallManager 3.0 on the Cisco ICS 7750
Copyright © 2000, Cisco Systems, Inc.
All rights reserved.
Posted: Mon Oct 2 14:15:47 PDT 2000
Copyright 1989-2000©Cisco Systems Inc.