Unified Communications

CUCM ICMP packets dropping

Updated: Sep. 21st 2020 by Jing Sun

Bulk upgrade VoIP phones (69xx) from SCCP to SIP with WGET command

Updated: Sep. 2019 by Jing Sun

SFTP upgrade Cisco IP Phone Firmware - Precaution

Updated: Aug. 2019 by Jing Sun

Cisco 6921/41/45 Factory Default Reset Issue

Updated: Aug. 21, 2019 by Jing Sun

Troubleshooting the Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G

Updated: 2019 by Cisco Systems

Add new PAK UCM licenses into PLM

Updated: May 2019 by Jing Sun

Virtualization for Cisco Unified Communication

Updated: Nov. 23, 2018, edited by Jing Sun

CUCME Cheatsheet - from Iwan Hoogendoorn

Create by Iwan Hoogendoorn, http://www.i-1.nl

CUCM TCP & UDP Port Usage - from Iwan Hoogendoorn

Create by Iwan Hoogendoorn, http://www.i-1.nl

Bulk Configure Changes with Import/Export Feature - Cisco Doc. ID:200596

Updated: March 12, 2018 by Cisco Systems

Config CUCM Trace File

Updated: Feb. 2018 by Jing Sun

Cisco Unified Communications Manager Restricted versus Unrestricted Software Classifications

Updated: 2017 by Cisco Systems

CUC/Unity voicemail access delay

Updated: Nov. 2017 by Jing Sun

Cisco 8831 firmware (sip8331.9-3-3-5) upgrade - Precaution

Updated: July 2017 by Jing Sun

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