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Video Conferencing Equipment and Services for Installation & Maintenance – Cisco TANDBERG, Polycom, LifeSize, Sony, Vaddio Original Article Firewall Port Forwarding for H.323 video H.323 uses a single fixed TCP port (1720) to start a call using the H.225 protocol (defined by H.323 spec) for call control. Once that protocol is complete, it then uses a dynamic TCP port for the H.245 protocol (also defined by the H.323 spec) for caps and channel control. Finally,…

IOS: ROMMON on the C6500/Sup720 Recently, one of my Supervisor 720 goes into a permanent reboot cycle. I was able to break it into ROMMON mode, but I couldn’t get it to ‘stick’ the boot settings. Finally…. Finally, one of the other guys came and looked over my shoulder and pointed out that I was making two mistakes. Here is the correct syntax: rommmon 2 > BOOT=bootdisk:s72033-advipservicesk9_wan-vz.122-18.SXF14.bin rommon 3 > set PS1=rommon ! > LOG_PREFIX_VERSION=1 SLOTCACHE=cards; ACL_DENY=0…

Firefox Error/Bug ” error ssl_error_weak_server_ephemeral_dh_key ” Solution : Note that users with the current and older Firefox releases can toggle these prefs to false on the about:config page to disable the cipher suites that are involved with the Logjam vulnerability. security.ssl3.dhe_rsa_aes_128_sha security.ssl3.dhe_rsa_aes_256_sha Bug 1138554 – NSS accepts export-length DHE keys with regular DHE cipher suites Logjam: How Diffie-Hellman Fails in Practice: https://weakdh.org/

URL # CUIC Cisco Reference User Guide for the Cisco Unified Intelligence Center Reporting Application, Release 9.1(1) Data Sources Page This page opens when you click the Data Sources drawer. After a new installation, this page shows the following Data Sources:  Unified Intelligence Center data source  A Data Source for the Unified Intelligence Center database is added by the installer. This database holds tables for objects such as reports, dashboards, value lists, and users that…

Understanding How Cisco WebEx Enabled TelePresence is Deployed http://www.cisco.com/c/en/us/td/docs/telepresence/infrastructure/tms/config_guide/webex_enabled_telepresence/cts_webex_config/cts_webex_info.html#65805 There are three possible network topologies for Cisco WebEx Enabled TelePresence: SIP Video, Presentation and Audio SIP Video, Presentation and PSTN Audio: – Using a gateway registered to Unified CM – Using a gateway registered to Cisco VCS Control SIP Video, Presentation and Audio WebEx is deployed using WebEx Audio. Main video, content, and audio to and from the WebEx cloud is negotiated between the Cisco…

Hi All , To ensure the correct alignment of astronomical and atomic time, the International Earth Rotation & Reference Systems Service has called for an extra second to be added to Coordinated Universal Time (UTC) at 23:59:59 on 30 June 2015. This will be the 26th leap second adjustment since 1972, and represents an important consideration for providers of computing, networking, and software solutions. Cisco Response In January 2015, the International Earth Rotation & Reference…

WEBEX – Configuring Servers Use these features to configure your servers: SMTP Server—The SMTP server handles the sending of email from the email client to the destination. Storage Server—The NFS server is the storage server where all the meeting recordings will be stored. Configuring a Mail Server Configuring an SMTP Server Configuring a Storage Server Using the Disaster Recovery Feature Configuring a Mail Server Configure a mail server to enable your system to send meeting…

CME – How to collect Debug Logs ====================> How to enable Voice call Debug Filtering Voice call debug Filtering ————————– First configure the filter  using “call filter match-list <tag> voice” and then use the filter as a debug condition using “debug condition match-list <tag> call filter match-list <tag> voice incoming calling-number <pattern> incoming called-number <pattern> incoming dialpeer <tag> incoming media local ipv4 <ip address> incoming media remote ipv4 <ip address> incoming port incoming signaling local…