Application Notes for Symmetricom SyncServer® S200 with

Avaya Solution & Interoperability Test Lab

Application Notes for Symmetricom SyncServer® S200 with Avaya Communication Manager – Issue 1.0

Abstract These Application Notes describe a compliance-tested solution comprised of Avaya Communication Manager and the Symmetricom SyncServer® S200. The Symmetricom SyncServer S200 is an NTP server that can be used as a source for Network Time Protocol (NTP) timing. Testing was conducted via the DeveloperConnection Program at the Avaya Solution and Interoperability Test Lab.

JPA; Reviewed: SPOC 9/21/2006

Solution & Interoperability Test Lab Application Notes ©2006 Avaya Inc. All Rights Reserved.

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1. Introduction These Application Notes describe a compliance-tested solution comprised of Avaya Communication Manager 3.1.2, and the Symmetricom SyncServer S200. The Symmetricom SyncServer S200 is an NTP server that can be used as a source for NTP timing. Avaya Communication Manager Media Servers can obtain the time from an external NTP server. Testing was completed with the Avaya S8500C Media Server and the Avaya S8300B Media Server. Avaya Media Gateways obtain time from Avaya Media Servers upon registration. The Avaya G650 Media Gateway and Avaya G350 Media Gateway were included in the testing. The Symmetricom SyncServer S200 GPS Network Time Server synchronizes clocks on servers for IT enterprises and high-bandwidth Next Generation Networks. This Stratum 1 level NTP time server derives its time directly from the atomic clocks aboard the GPS satellite system. If the GPS reference signal is ever lost, the S200 can automatically revert to a Stratum 2 mode and retrieve time from other user designated time servers either locally or via the Internet. The S200 provides reliable and secure network synchronization technology by combining multi-port, high-speed/ high capacity network interfaces with versatile GPS timing receiver technology. It supports a wide range of network protocols including IPv4 and IPv6, for easy management and seamless integration into an existing and future network. The S200’s front panel is designed to quickly bring the time server online with a few front panel keystrokes or DHCP. To fully configure the unit, use the web interface. The web based user interface offers the network administrator ease-of-use and remote access, with full control of the server via a standard browser interface. The high availability and throughput of the three 10/100Base-T ports translates into the support of hundreds of thousands of network clients while maintaining microsecond caliber NTP timestamp accuracy. These three ports also provide the flexibility needed to easily adapt to different and changing network topologies and security requirements. Figure 1 illustrates a sample configuration consisting of Avaya Communication Manager and Symmetricom Servers. The Avaya servers obtained their time from the local Symmetricom NTP server. The local Symmetricom server was synchronized to a remote server over the Internet.

Figure 1: Sample configuration.

2. Equipment and Software Validated The following equipment and software/firmware were used for the sample configuration provided:

Equipment Software/Firmware Avaya S8500C Media Server with Avaya G650 Media Gateway

Avaya Communication Manager 3.1.2 (R013x.01.2.632.1)

Avaya S8300B Media Server with Avaya G350 Media Gateway

Avaya Communication Manager 3.1.2 (R013x.01.2.632.1)

Avaya 4600 Series IP Telephones 2.6 (4610SW H.323) Symmetricom SyncServer S200 1.01




3. Configure Avaya Communication Manager This section describes the steps for configuring Avaya Communication Manager Media Servers to obtain time from an external NTP server. This configuration can be done during the initial installation process using the Avaya Installation Wizard, or afterwards using the Avaya Maintenance Web Interface. The section that applies to the NTP configuration is the same using both methods. The instructions below are for the Avaya Maintenance Web Interface. Start a web browser and enter the IP Address of the Avaya Media Server in the Address field. Follow the instructions and log in. The main screen below will appear.




Click on “Launch Maintenance Web Interface”, and a new window will open as shown in the following screen.




Click on “Configure Server”, read the instructions, click “Continue” (not shown) until the following screen appears. Select the “Configure individual services” radio button, and click “Continue”.




Click on “Configure Time Server” and the following screen will appear. Click the “Use these Network Time Servers:” radio button and provide the IP Address of the NTP Server in the “Primary” field. Note that the IP Address provided here is not a real public NTP server.




Click “Change”. The following screen will appear confirming the change was successfully completed. Click “Close Window” to complete the task.

4. Configure the Symmetricom SyncServer S200 This section describes the basic steps to assign an IP Address to the Symmetricom SyncServer S200 and how to set its sync source to be another NTP Server (called Peering). There is no specific configuration required to support Avaya Communication Manager. The Symmetricom SyncServer S200 will respond to all NTP requests. The initial IP Address can be entered using the keypad on the front of the server. Press the “Menu” button and a short menu will appear. Press the digit “1” to enter the “LAN1 Config”.




Press the digit “1” to enter the “IPv4” configuration. Press the digit “1” to assign a “Static” IP Address. Use the keypad to enter the IP Address for the server and press “Enter”. Use the keypad to enter the Subnet Mask for the server and press “Enter”. Use the keypad to enter the Gateway IP Address and press “Enter”. Use a web browser and enter the IP Address of the Symmetricom SyncServer S200 in the Address field of the browser. Log in with proper credentials and the main screen, shown below, will appear. Click the “NTP” button on the left pane, and select the “Config” tab. Use the pull down menu and select “Server” for the “Role” field. Enter the IP Address of the remote NTP server to be used as the sync source in the “Address” field. Press the Apply button (not shown).

Detailed configuration instructions and options for the Symmetricom SyncServer S200 are available in the SyncServer S200 User Guide [2]. This document can be launched by pressing the symbol in the lower right of the web page that looks like a book with a question mark on it and it is also available online for download.







5. Interoperability Compliance Testing The interoperability compliance testing focused on verifying that Avaya Communication Manager Media Servers are able to derive time from the Symmetricom SyncServer S200.

5.1. General Test Approach The general test approach was to place Avaya Communication Manager Servers in a local area network with the Symmetricom SyncServer S200, and provide Internet connectivity for the Symmetricom SyncServer S200 to synchronize to an external NTP server. The Avaya servers were configured to get NTP time from the Symmetricom SyncServer S200 and network failures were introduced to verify proper recovery.

5.2. Test Results All tests were successful. Avaya Communication Manager Servers were able to derive their time from the Symmetricom SyncServer S200, and pass time information to Avaya IP Telephones.

6. Verification Steps The following steps may be used to verify the configuration.

Use a web browser to access the local Symmetricom SyncServer S200. Click the “Status” button on the left pane, and select the “NTP” tab. The screen below shows that the Symmetricom SyncServer S200 is synchronized to its peer.




Click the “NTP” button on the left pane, and select the “Assoc” tab. This screen shows polling information to the remote peer. The “Reach” field value of “377” is an 8 bit octal number indicating the success of the last 8 polls. “377” shows all 8 bits are on, indicating the last 8 polls were successful. The “Poll” value “128” indicates polling is taking place every 128 seconds.




Using the browser, start the Maintenance Web Interface for the Avaya Communication Manager server. Select “Network Time Sync” on the left pane. The following screen shows status information on the synchronization to the Symmetricom SyncServer S200. The “Remote” field shows the IP Address of the local Symmetricom SyncServer S200. The “Refid” show where the Symmetricom SyncServer S200 is synchronizing from. The “Stratum” field shows the clock source is Stratum 2. The “Poll” field shows polling is taking place every 64 seconds. The “Reach” field shows that the last 8 polls were successful.







Verify that the Avaya Communication Manager Media Server has updated its time by accessing the server through telnet or using Avaya Site Administration. Issue the “display time” command to see the date and time on Avaya Communication Manager. display time DATE AND TIME DATE Day of the Week: Tuesday Month: September Day of the Month: 12 Year: 2006 TIME Hour: 12 Minute: 2 Second: 32 Type: Standard Daylight Savings Rule: 0 WARNING: Changing the date or time may impact BCMS, CDR, SCHEDULED EVENTS, and MEASUREMENTS Command:

7. Support For technical support on Symmetricom products, consult the support pages at http://www.symmetricom.com or contact Symmetricom Tech Support:

• Worldwide (Main Number) 1-408-428-7909 • USA, Canada, Latin America including Caribbean, Pacific Rim including Asia, Australia

and New Zeland: 1-408-428-7909 • USA toll-free: 1-888-367-7966 (1-888-FOR-SYMM) • Europe, Middle East & Africa: 49 700 32886425

• Americas, Asia, Pacific Rim: [email protected] • Europe, Middle East & Africa: [email protected]

8. Conclusion These Application Notes describe a compliance-tested solution comprised of Avaya Communication Manager 3.1.2, and Symmetricom SyncServer S200 1.01. Avaya Communication Manager Media Servers were able to derive time from the Symmetricom SyncServer S200 NTP Server.

http://www.symmetricom.com/




9. Additional References Product documentation for Avaya products may be found at http://support.avaya.com [1] Avaya Installation Wizard, February 2006, Part Number: 555-245-754 Product documentation for Symmetricom products may be found at http://www.symmetricom.com [2] SyncServer S200, S250, S250i User Guide, March 23, 2006, Part Number: 997-01520-01

http://support.avaya.com/

http://www.symmetricom.com/




©2006 Avaya Inc. All Rights Reserved. Avaya and the Avaya Logo are trademarks of Avaya Inc. All trademarks identified by ® and ™ are registered trademarks or trademarks, respectively, of Avaya Inc. All other trademarks are the property of their respective owners. The information provided in these Application Notes is subject to change without notice. The configurations, technical data, and recommendations provided in these Application Notes are believed to be accurate and dependable, but are presented without express or implied warranty. Users are responsible for their application of any products specified in these Application Notes. Please e-mail any questions or comments pertaining to these Application Notes along with the full title name and filename, located in the lower right corner, directly to the Avaya DeveloperConnection Program at [email protected].

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Application Notes for Symmetricom SyncServer® S200 with