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CUCM based SIP URI Dialing and ILS Networking

So, here’s an article I wrote for CSC as part of Chalk Talk series. This article walks through the basics of SIP URI dialing and ILS networking as well as touches blended addressing in CUCM. The article is published as part of Cisco’s Technical Services Newsletter, July issue http://www.cisco.com/web/services/technical-services-newsletter/index.html

Here’s the excerpt from the article:


 

Cisco Collaboration solutions offer much more than just traditional ways to communicate within and outside of an enterprise network. Complementing the next generation communication solutions such as SIP gateways, SIP endpoints, Jabber, WebEx etc., Cisco Unified Communications Manager (CUCM) has evolved to a degree that it can work and integrate with multiple platforms and can serve multitude endpoints. This article highlights features and benefits of the recent inclusion – SIP Uniform Resource Identifier (URI) based dialing as well as support for Intercluster Lookup Service (ILS) Networking.

SIP URI Dialing

In context of Cisco Collaboration, SIP URI can be best compared to an email address such as abc@xyz.com. The URI format is usually general form: sip:user:password@host:port;uri-parameters?headers. This format has been used by SIP dominant networks for years and is now gaining universal popularity because of its globally routable (DNS-based) nature/capability. A SIP URI can be automatically imported from LDAP (provided the cluster is integrated with an LDAP server) such as a mail or the msRTCSIP-primaryuseraddress attribute.

Following are salient features of SIP URI:

  • In a SIP URI a user name is optional however, CUCM does not support URIs without a user name
  • URI parameters and headers are optional
  • The user name is case sensitive however host is case insensitive (RFC 3261). This parameter is configurable starting CUCM 9.1 (under Enterprise Parameters – URI lookup policy)

 

For full article please go to https://supportforums.cisco.com/document/12243806/chalk-talk-cucm-based-sip-uri-dialing-and-ils-networking

SIP URI and ILS Networking are important concepts from CCIE Collaboration exam perspective. For in depth information about these concepts and how to deploy them in a CUCM intra/inter cluster environment please read CCIE Collaboration Quick Reference

CCIE Collaboration Quick Reference helps you with all the information you need to pass your written exam and helps you prepare for the lab certification.. Get your copy now http://click.linksynergy.com/fs-bin/click?id=aV8WWcTd0Yc&offerid=145238.10000399&type=3&subid=0

 
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Posted by on July 28, 2014 in CCIE Collaboration

 

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Cisco Press eBook Deal of the Week – CCIE Collaboration Quick Reference

Good news for all CCIE Collaboration aspirants out there!

Your wish to get your hands on the only source of authentic information on CCIE Collaboration exam preparation is just a click away as the ebook CCIE Collaboration Quick Reference is now available at 50% discount! Yes, that’s true and the offer is for this week only so go ahead and grab your copy now!

Get you copy here!

Happy reading and learning!

 
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Posted by on July 15, 2014 in CCIE Collaboration

 

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Free Webinars on CUCM Endpoint Security and Compliance

Please join Stephen Welsh (UnifiedFX CTO) and myself for a series of educational webinars on Cisco Unified Communications Manager (CUCM) Endpoint Security and Compliance.

This series of webinars is aimed at helping UC and Security community understand, uncomplicate and achieve security for Cisco UC endpoints (IP Phones, Softphones) Learn key principles, leading practices and how to effectively manage Cisco UC endpoints for security compliance.

The Essentials of Endpoint Security and Compliance is a 3 session series with following sessions –

• Session 1: The Impact of Security by Default (5th Sept)

• Session 2: Understanding and Managing ITL & CTL Files (12th Sept)

• Session 3: Leading Practices for Endpoint Security & Compliance (19th Sept)

You can register for the webinars at http://events.unifiedfx.com

Unifed FX’s webinar page http://goo.gl/IPZvQg

These sessions will be recorded so in case you’re unable to join for the live session(s) you can view the recording later.

Keep up the security!

 
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Posted by on September 1, 2013 in UC Security Posts

 

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Understanding Cisco Unified Communications Manager Express Security – Voice Encryption

Voice over IP (VoIP) is not just need of hour for most enterprises; it’s something their business depends on to a degree that without IP communications in place, their business processes and revenue streams will fall apart. In such case, it goes without saying; security of voice networks is one of the chief concerns when it comes to security of intellectual capital and customer data. More often than not, one of the first thoughts is how to secure the VoIP network itself which is leveraged by IP Telephony / Unified Communication (UC) applications.

So what is that may be the most commonly sought after yet elusive security control which plays an indispensable role in securing a VoIP network? Your guess is as good as mine, it is encryption! Now, you are well within your rights to ask why elusive? The simple answer is – where encryption can help you succeed and protect the privacy of communications, it can also be detrimental for various functions / organizations e.g. monitoring secure calls is not a trivial task and encrypting all endpoints has an impact on platform sizing and performance.

In this article we discuss about the security of Cisco Unified Communications Manager Express (CUCME) which is an integral part of Cisco UC; and more so of Cisco Express Call processing regime.

To read the full article visit http://www.firewall.cx/cisco-technical-knowledgebase/cisco-voice/956-cisco-voice-cme-secure-voip.html

To learn in depth about Cisco Collaboration Infrastructure, endpoint, device and application security refer to Securing Cisco IP Telephony Networks http://www.amazon.com/dp/1587142953

 
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Posted by on May 12, 2013 in UC Security Posts

 

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Audio review and intro of ‘Securing Cisco IP Telephony Networks’

I’ve to admit, this is pretty cool!

There’s now an audio review and intro available for the book ‘Securing Cisco Telephony Networks’ thanks to ComputerBookMix.com

To listen to audio preview click here Audio Preview of Securing Cisco IP Telephony Networks

 
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Posted by on April 3, 2013 in UC Security Audio

 

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Have you ever experienced a security breach in your VoIP network?

 
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Posted by on April 3, 2013 in Polls

 

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Understanding Cisco UC Security

Understanding Cisco UC Security

VoIP Security is top of mind concern for CIO’s, IT managers, UC engineers, and security professionals. This video highlights the various potential threats that exist in real world around VoIP networks and the remediation methods, Cisco UC solution defense construct, UC PKI, Security by Deafult (SBD) and much more.

https://supportforums.cisco.com/videos/5584

The video is accompanied by a blog (and you can also download the slide deck for your future reference)

 
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Posted by on March 13, 2013 in UC Security Videos

 

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