A device package adds new phone models to Unified CM and updates the firmware and configuration files that activate features on your Cisco device. You may need to configure some settings or attributes for the new features, which may be disabled by default. You can download device packages from the Cisco Unified Communications Manager software download page. Just click the Unified CM device package link and sign in with your Cisco credentials in a new browser window or tab. To apply a device package, start with the publisher server and the TFTP server and then proceed to the rest of the Unified ..read more

Jabber normally comes with User Principal Name (UPN) enabled. This means that Jabber will use the Windows local username to find the user in Cisco UDS. If the user is found in CUCM, Jabber will automatically fill the username in the login window and ask for the password. UPN enabled Jabber does not allow the user to change the username. To disable UPN, you can do one of the following: Install Jabber from CLI with UPN disabled: msiexec.exe /i CiscoJabberSetup.msi UPN_DISCOVERY_ENABLED=false CLEAR=1 Remember, you need to be in the folder where the jabbersetup.msi file is located. Go to that fold ..read more

The serial number of a Cisco device tells you when and where it was made. It has this format: LLLYYWWXXXX. LLL is the location code, YY is the year code, WW is the week code, and XXXX is a unique identifier.YY is the year code, which is the number of years since 1996. Here are some examples of location and year codes: Year Codes ..read more

In this blog post, I will share how to convert Cisco Catalyst 9162, 9164, or 9166 Series Access Points from DNA management mode to Meraki mode. This is useful if you want to add these access points to your Meraki cloud management dashboard. One of our customers faced an issue with their 9166 access point that they bought recently. They tried to add it to Meraki, but it did not work as expected. The reason was that the access point came in DNA management mode by default. To use it with Meraki, they had to change the management mode to Meraki. To do this conversion, you need a Cisco 9800 Wireles ..read more

The customer was attempting to add a new VLAN, but it was not appearing on a couple of the switches. The IT team approached us, suggesting that we hold the WIFI migration as they needed to replace the switch due to issues with Flash. They were unable to see the files in the flash when issuing “show flash: & Dir Flash: Command” Instead of replacing the switch, I asked them to issue the command ‘FSCK flash:’. This resolved their problem and we were able to successfully complete our project. Whats is FSCK FCSk command is used to check and repair the files systems of Cisco router, switches, fi ..read more

The new 802.11ax (Wi-Fi 6) standard addresses both Co-channel interference (CCI) and Overlapping Basic Service Set (OBSS) BSS Coloring is a method used to differentiate between the BSS of access points and their clients on the same RF channel. Wi-Fi 6 enables each AP radio to assign a value (from 1 to 63), known as BSS color, to be included in the PHY header of all HE transmissions from devices in its BSS. With devices of each BSS transmitting a locally-unique color, a device can quickly and easily distinguish transmissions coming from its BSS from those of a neighboring BSS. The following p ..read more

ISSU is an upgrade from one image to another while the traffic flow. ISSU was released on version 17.1.X as beta and in production from version 17.3. Issu Eliminates network Downtime during the controller upgrade. Automate the process of upgrade without manual interventions. Prerequisites of ISSU upgrade Base Image is ISSU capable SSO pair in Active-Hot Standby Controller in INSTALL MODE ISSU Process The user upload the image and the image will be synced to AP and the stand by controller. The image will be installed on standby Controller and it reboot with new image The standby becomes act ..read more

The new Push Notification Architecture standardize with Webex Cloud. The updated enhancement require CUCM 15 or CUCM 12.5Su8 which still not released. New Architecture Current Architecture ..read more

If you use expressway for device registration by default this is ON. But enabling the Smart licensing turns OFF the registration mode on Expressway. We must enable the Registration Mode manually ..read more

Omantel use Pure in band DTMF with RFC 2833 disabled. We need to use LTI Transcoder on the CUBE to make this working. In this blog i have shared a working CUBE configurations for omantel SIP trunks voice service voip ip address trusted list ipv4 212.72.15.217 ipv4 212.72.15.220 mode border-element allow-connections sip to sip fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none trace sip ! ! voice class uri 1 sip host ipv4:IP host ipv4:IP ! voice class uri 2 sip host ipv4:212.72.15.217 host ipv4:212.72.15.220 voice class codec 1 codec preference ..read more