When enabling the presence service in CUCME, you are using the SIP methods of Subscribe and Notify to allow users the ability to see changes in the line state of phones.  The phone acts as a watcher using the subscribe method to get status updates from a directory number assigned to a phone that acts as the presentity.  CUCME will respond to the request and each time there is a status update for that DN or presentity, CUCME will send all watchers a notification message.  CUCME presence can be applied either as a BLF speed-dial assigned to a line button or as BLF call-lists that will support status notifications of a presentity in the directories or call log (missed, placed, received) of the phone.

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In CUCME 4.1 and later versions, it is possible to provide end users the flexibility of creating ad-hoc conferences involving more than 3 parties with each participant potentially using a low bit rate codec such as g729. As you might expect, IOS software is unable to provide this function natively without the aid of Digital Signal Processors (DSP’s) most likely hosted on the CUCME gateway.

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I remember a time when I taught a class called CIT (Cisco Internetwork Troubleshooting) and there was a wonderful rule that made all the students sweat a little more and all the instructors give that old Dr.Claw laugh (From Inspector Gadget if you have no idea what I’m talking about).  Essentially it allowed the Instructor to do things that were really mean and evil and forced the students NOT to take the easy way out.  What was that rule?  When troubleshooting you may NOT use the command Show Running-Config or any variant of it.
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Did you Miss our vLectures that were scheduled for this week & last week? No worries!

All our vLecture sessions are recorded and available for those who have missed our FREE vLecture and for participants who want to review the vLectures sessions again. We have saved the session recordings for you. Watch our world renowned CCIE instructors explaining specific technical topic in our technology-focused classes and capture the technical knowledge needed to increase your chances of passing CCIE exam.

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When dealing with call routing in general, it is no secret that there are countless ways to manipulate dialed digits to invoke a requested behavior.  Anyone who has began studying to achieve the Cisco CCIE Voice certification has become quite aware of the plethora of methods to utilize when completing the Call Routing sections of the lab blueprint.  It is quite possible when you sit the CCIE Voice lab to be asked to do some sort of Call Blocking as well, whether that is in the form of blocking calls to or from certain numbers, number type or even blocking calls based on date or time of day.    In this blog, we will focus on after-hours call blocking as it pertains to Cisco Unified Communications Manager Express (CUCME) or CME-as-SRST.  
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