Cisco CUCM Tricks for Active Directory & LDAP

What is Active Directory Database Structure of Active Directory Common Database Schemas of LDAP Server Active Directory (AD): is Database storing all kinds of Objects and Policies which apply to the interoperations between Objects. Object: It is the minimum component in the database that AD manipulates and each Object is associated with a set of …

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Gatekeeper & CUBE Summary

Why GK & CUBE Gatekeeper was initially introduced to interconnected several CUCM clusters in a simple and efficient way in large scale IPT network. Call Routing on GK is a 2-matching-steps (Zone Prefix & Technology Prefix) deal. Apart from that, GK also provides supplementary functions such as BW management, Call Admission Control, Name resolution etcs. …

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Modify License MAC of Linux-based appliances on VM

This post entails the procedure of modifying License MAC address of any Linux-based Cisco UC appliances in Lab environment. Procedures Overview. Customize BIOS of VM to boot from Red Hat Enterprise LINUX 5. Enter rescue mode, and enable root remote ssh access to Linux OS Access LicenseMac.sh with root privilege and change License MAC to …

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Basic Tips for CUCM Troubleshoot & Verification

This thread focuses on the basic troubleshooting of those simple problems arising from install & initial setup, system configuration, daily maintenance tasks etc. Monitoring TFTP / SFTP / FTP / Signaling events Whenever you upload phone firmware or upgrading package through SFTP / FTP / TFTP, to verify if the uploading is in progress, you …

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Inspection of UCS C240 Rack Mount Server

Major Hardware Components: UCS Chassis & bundled HW components Single or Dual CPU, DIMM Sockets, SAS Expander, Embedded & Internal pluggable (Optional) RAID card. Hard Drivers (SFF: small form factor; LFF: Large form factor); 24 SFF Drivers with SAS Expander. 16 SFF Drivers without Expander. 12 LFF Drivers with SAS Expander. DIMM Card & PCIe …

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Database Communication Error – CUCM

Background Info& Problem Description: CUCM 8.6.1.20000-1 Installed on VMware machine, up and running perfectly. successfully shut down CUCM under CLI by issuing command “utils system shutdown”, and the VMware host is powered off automatically. power on CUCM VMware host again and login CUCM Admin webpage, it fails with error message “Database Communication Error”. Possible Causes: …

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Useful InfoPieces Gathering

Difference between “h323-gateway voip interface” and “h323-gateway voip bind srcaddr”. CUBE SIP Media and Signaling Binding to an Interface. Wildcards and Special Characters in Route Patterns and Hunt Pilots of CUCM. Troubleshooting DSP Farm Registration. IOS Software Upgrade Procedure. Modify the License MAC address for Cisco UCOS.

CME Basic Setup

Background Info: Files in Router Flash for CME to work properly Cisco IOS: CME version depends on the IOS file version you installed. Refer to CME and IOS Version Compatibility Matrix for identifying the correct IOS version to download. Normally, IOS already includes the phone firmware for most phone model to work properly. CME Basic …

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CME 7.1 emulation using 7200 Router in GNS3

Background Info:Reasons to use ISR 7200:According to below URL, it is recommended to use 7200 router in GNS with IOS 12.4(24)T which enables you to simulate CME version 7.x, while all other routers with 12.4(15)T allow you to access CME 4.x and older versions.Emulating CME 7.x in GNS3Only 7206 out of 7200 series Routers can …

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