Showing posts with label option. Show all posts
Showing posts with label option. Show all posts

Monday, December 10, 2012

IP Phone 7945, 7965, 7975 Factory Reset Procedure, SCCP Firmware Upgrade & CME DHCP Server Setup

Learn how to reset your Cisco IP Phone firmware, perform firmware upgrade, setup CallManager Express DHCP Server for IP Phones (option 150), necessary commands to upload & extract firmware files (cmterm-XX.tar) on your CME router.

http://www.firewall.cx/cisco-technical-knowledgebase/cisco-voice/924-cisco-voice-ipphone-upgrade.html

Friday, April 20, 2012

Analysing TCP Header Options

This article tackles the Options section within the TCP Header. Sections covered include: Maximum Segment Size, Improving performance with Window Scaling, Selective Acknowledgements, Timestamps, Nop and much more. All topics include detailed diagrams and examples.

http://www.firewall.cx/networking-topics/protocols/tcp/138-tcp-options.html