Posts Tagged ‘globalization’
That is a very true saying – in fact one that we believe strongly in here at INE. However we also understand just how expensive it can be to undertake studying for any CCIE Lab exam. That is why, whenever we can, we try to reduce the load on you – the students – to bear this cost. Take for instance our CCIE RS Volume II for Dynamips – we do all we can to provide you the best available instruction while trying to reduce, or sometimes even be able to eliminate the hardware costs associated with studying.
So now we have taken to task trying to do the same for our CCIE Voice track products. We can’t quite virtualize all of the routers used as voice gateways (pesky DSP’s and TDM trunk cards that dynamips won’t ever be able to support since we actually need hardware for the drivers to be able to trigger the signaling), but we thought we would try to reduce the hardware cost for you, the student, in any way we can with the necessary hardware. Anyone having decided to study for the CCIE Voice lab exam has no doubt realized that even if you decide not to take on the enormous cost of building your own rack to practice with, and instead, to rent rack time from any vendor on the market, you still must purchase your own hardware 7961 IP Phones along with some sort of a hardware VPN solution (such as an ASA 5505 or 851 ISR router) at a minimum in order to be able to practice for all of the most important features tested in the lab. This is quite simply due to the fact that the much older 7960′s and all current SCCP Software Client phones (including Cisco CIPC, IPBlue VT-GO*, etc) don’t support any of the newer features – those that are most critical to studying for the latest lab exam. Even if you can manage to find refurbished 7961 IP Phones from eBay for roughly $150/phone and $500/ASA5505 – you still have to invest over $1,000USD just in hardware before you are ready to rent the rack! Seeing as how the 7961 phones are already a generation behind the current ones, and the possibility that when you pass your lab 6-12 months from now that they will likely be 2 generations old and harder to sell for the same price you paid for them – it becomes a very expensive venture to undertake!
We had a great response in turnout to Josh’s vSeminar yesterday. Thanks to everyone who made it out, we certainly hope it was beneficial for you!
A few comments from attendees in the ET helped us realize that the next Voice vSeminar, this Friday covering Simplifying Globalization and Localization, might be best held at 4pET/1pPT, rather than the 6pET/3pPT that it was originally scheduled for. So we changed it.
So why a lecture on this topic? Well, every class that I have taught over the last few months has invariably had most students walking in with a printout of the 40+ page, 3-part series on Globalization, Localization, and Mapping the Global to Local Variant blogs that I posted here on this blog a bit back. They all seem to have the same thing to say: “Excellent post, now can you simplify it just a bit for me and can you also explain why we would want to do any of this?”. So to that end – I decided to take on the task of helping you understand not only how in a much simpler way, but possibly more importantly, the why of it all. Continue Reading
So let’s recap, we’ve discussed the how and why of Globalizing every Calling Party Number – and we recall that this occurs as the first step inside CUCM as the call arrives Inbound at any of our enterprise gateways. We’ve also taken a good look at Localizing each number – and we recall that this occurs as the last step inside the CUCM as the call leaves Outbound to each destination IP Phone. So it logically behooves us to next take a look at the task Cisco labels “Mapping Global Calling Party Numbers to their Local Variant”. Now this may sound a bit daunting or even just plain confusing, but rest assured that it isn’t, and it could probably even stand a naming refinement – in fact for the rest of this article I will simply refer to it as “Call History Dialing” since that is more properly what we are wishing to perform.
In the last installment of this series, we took a brief look at the history of the ITU-T’s E.164 recommendation, as well as, hopefully, an understanding as to why we might want to begin building dial plans in CUCM versions 7 and later in a truly Globalized format, and we took a look at the basic configuration to do so. In this post we will look at the next phase in the process, namely Localization.
While having been covered before, there seems to still be quite a lot of confusion surrounding Cisco’s newest call routing additions and features in CUCM 7. These are best cleared up since they not only are completely fair game as testable topics for the CCIE Voice lab, but also since CUCM 8 is just about to FCS and includes a great deal of call routing enhancements of its own (such as policy-based call-routing and inter-cluster dynamic DN route building) which will only build on the complexity of CUCM 7’s call routing enhancements (I’ll blog on some of the new features of CUCM 8 another day if anyone is interested).
In this blog article I will first list the new call routing features, then explain why we might be interested in using them (which requires a bit of understanding of history that we will go over), next move on to how to configure them, and finally wrap up with some real world examples. This all might take a while to explain with accuracy and clarity, and therefore will be broken down into sections to assist the reader with an easier course of digestion and absorption. Also it should be noted that before we begin, we are only going to seek to understand the E.164 numbering recommendation in this blog article, that is – we will not go into the specifics of E.164 NUmber Mapping (a.k.a. ENUM) here – although I will cover that in a later blog article.