a different type of IT conference

Here is an interesting, free to attend conference that I wanted to highlight:The points I liked about it is not about what it is, but about what it is not:A Marketing EventA Trade ShowModels with PowerPoints and BrochuresA business...

03/12/2012

Datacenter in a box - containers are not just for storage

I'm used to thinking of data centers in the form of a large room, with racks, raised floor and neon lights. But there are other ways: The things is, you dont have to be google to build a datacenter based on containers, the...

02/19/2012

A new 15.1(2)T IOS feature that should be considered when upgrading

One of the first things to make sure when an H.323 gateway will not work with Cisco Unified Communication Manager (CUCM) is the IP address configuration. This is a common mistake where engineers would configure the gateway in CUCM...

09/08/2011

Virtualized Cisco Unified Communication is supported on 3rd party servers (HP and IBM)

This is a short post about something I recently found out, it also continues questions I had from previous posts about 'when will Cisco support additional hardware', as it was asked at:...

06/23/2011

Anyconnect VPN client Start Before Login (SBL) tips

This is going to be an add-on post to a documented procedure, which can be found...

05/16/2011

Which Cisco VPN client should I go with?

Cisco has two main options when it comes to vpn clients, IPSEC or anyconnect.IPSEC has been there for a while, since the vpn3000 days, and to date, it is probably the most known and used vpn client among Cisco customers. At some...

04/03/2011

First look at Cisco's Call Manager 8.5

Version 8.5 was announced and is orderable since December 2010, although the data sheet is not up yet, there are a few new features that can and should be mentioned about it. It is not the most exciting version that has been...

01/22/2011

So long 2010, welcome 2011 …

A year has passed and it is time for a short summary of this blog and the world it resides in.   Starting with the most popular posts of this year: the most accessed one was:First look into Call Manager 8.0, point taken and the one...

01/02/2011

A handy QoS configuration tool

Configuring QoS is not a hard task for me, with all the time that I spent in front of it while studying for certs and or configuring network devices it is easy. Nevertheless, it is time consuming and requires many details that I...

11/14/2010

A Cisco IPhone app that is worth sharing

A small diversion from my usual tech posting, but I thought this will be a helpful knowledge for other Cisco professionals. While searching the app store for something else, I stumbeled upon this app which was described as: Cisco...

10/17/2010

Is it safe to use a SIP trunk as your outbound dialing option?

A recent product security announcement from Cisco and a blog post by Chris Jackson made me feel it may appear that SIP trunking is not secure enough as a PSTN (Public Switched Telephone Network) access method. Indeed if you plug...

08/30/2010

Communication Manager 8.x: Cross Cluster Extension Mobility lab attempt - part 3

So it took me some time but finally I got hold of a couple of 7962 and verified that the EMCC config worked. Indeed there was no need to support it in IP Communicator which is why it was not supported. Here are some screen shots,...

07/03/2010

Communication Manager 8.x: Cross Cluster Extension Mobility lab attempt - part 2

Time to continue discussing my lab attempts with EMCC, which started about a month ago and is still 'work in progress' (mainly due to time constrains). Here is the link to my previous post on it:...

06/07/2010

Communication Manager 8.x: Cross Cluster Extension Mobility lab attempt - part 1

As one of the new features in CUCM 8.x, it seems like a good candidate to lab.This will not be the first time this topic is mentioned on the Cisco subnet, readers are encouraged to look at Dennis Hartmann's post on the subject, still...

05/09/2010

First look into Call Manager 8.0

Call Manger 8.0 has been announced and will begin shipping in April 2010; here are some new features that I can see an immediate benefit in:It can be virtualized on top of VMware ESXi 4.0 running on Cisco's UCS. Not every hypervisor,...

03/28/2010

IP Phone troubleshooting story

If you ever tried to convert a Cisco IP phone from Skinny to SIP or vice versa, you probably experienced that uncertainty when the phone was rebooting and pulling something from the TFTP but then it stopped.Usually it's making a...

03/05/2010

What is the most significant technology development of 2009?

It's this time of the year again, time to look back and analyze the events what shaped this year and years to come.As a UC oriented engineer, this was my first area to look into. Many things happened in this area during 2009, market...

12/24/2009

Cisco ISR Generation 2 does appear to bring value, at least in UC (voice and video)

Although the ISR G2 announcement from Cisco seems like more of the same, but faster and stronger, there are significant improvements related to voice and video that are worth mentioning. Here is a table that shows them:This does not...

11/08/2009

Evaluating the ASA Botnet filter

When the ASA Botnet filter feature was announced I thought that it's an interesting concept and is definitely worth trying. One of the interesting concepts that this feature introduces is the ability to monitor your outbound traffic...

10/03/2009

Thoughts about UC ROI

In the last Network World magazine, I came across an article called 'ROI doesn't always pan out with unified communications' and while reading through it, a few topics came up. To begin with, one must differentiate IP Telephony from...

08/30/2009

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