Posts

4 min read

First contact after I made it back from Cisco Live 2014!!

Cisco Live 2014 – San Francisco Just wanted to take this time to talk about my experience at Cisco Live 2014, representing the Modcomp team. It was a great experience and a nice way to meet with people that is in the same boat you are, Engineers that are seeing the same issues you see and others that have it all figured out (You want to be like them!!). So just to get you started off the narration of this adventure, I wanted to start by adding few things that I think deserve to be mentioned:

2 min read

CCIE Collaboration - Campus Design (Migration to Routed Access Layer Design)

So in the traditional Campus Design it used to be Layer 2 from the Access Layer to the Distribution and to the Endpoints, running Layer 3 on the Distribution and the Core, and in most of the cases, you will have a Core/Distribution approach called Collapsed Distribution Core. as shown in the example: Now moving from that model to a new and recommended approach you can take a look at the Layer 3 or Route Access layer Design, this one has many benefits as follows:

7 min read

CCIE Collaboration - Written Exam Reading List

Just wanted to share some knowledge about the locations on some useful resources: This document contains the topics that will be covered by the CCIE Collaboration exam, in my case I have been using an structured approach that goes from weakness I have. here are few (Just not to say all of them) SCCP Call Flows MGCP Call Flows UC on UCS (all fine print and special requirements, many things I didn’t know until now!!!) Answer Files….Who in earth uses them? (I know I would have saved so much time in past deployments by using them…Cool Stuff!).

2 min read

Cisco Collaboration Edge - Mobile Remote Access (Jabber with no VPN)

Hi there, I have been looking at the new collaboration edge deployments, in order to support Jabber from remote networks without the need of using a VPN (What a relief!!! - I was actually getting slammed from customers because of the lack of options from Cisco). Doing some research I was able to find the following documents: Collaboration Edge with Cisco VCS Expressway: Cisco TelePresence VCS Cluster Creation and Maintenance: www.cisco.com/c/dam/en/us/td/docs/telepresence/infrastructure/vcs/config_guide/X8-1/Cisco-VCS-Cluster-Creation-and-Maintenance-Deployment-Guide-X8-1-1.pdf

2 min read

Configure MoH on CUCME and Transcoding

So I stumbled into this topic with a customer and was having few issues to understand the mechanics of this simple step, my customer is having issues with quality on the music on hold. Here is what I did: Looked up in CUCM Flash and found a media file that I was going to use as MoH. media/music-on-hold.au First I started by working on my Transcoder: voice-card 0 * dsp services dspfarm*

2 min read

SIP Devices unable to stablish PSTN calls

I was just reading the following Article and wanted to add few things that helped me solve my issue: http://uctickets.wordpress.com/2014/03/21/11-sip-9971-phone-unable-to-complete-pstn-calls/ *** bearer-cap speech *** This simple command also fixed an issue I had with Jabber clients calling from Softphone mode to cellphones, and they were getting straight to the voice mail of that particular cellphone. At first it looks like a simple issue with the phone company, but then you start re-thinking it because it happens with every cellphone you make and with every SIP device you have connected to CUCM.

2 min read

CCIE Collab - Gateways and Trunks in CUCM

Hi there, so today I wanted to bring up something that was very confusing to me long time ago. The concept of MGCP, H.323 and SIP. these 3 are very big and there is a lot of information about them, I just want to explain with my own words what every single protocol means for me and the way I had to put it in my head before I was able to understand the technology behind it.

2 min read

CCIE Collab - Self Training

So today I was able to study for 3 hours, dedicated the first hour to read CIPT2 on Multi-site considerations, read about some QoS recommendations and also something about multi-site dial plans. I was also able to watch the demonstration videos on Media Termination Points (One of my weakest areas) from INE ATC for CCIE VOICE and I was able to understand more and more about it and saw some multicast and why is there, I remember studying but not paying to much attention to it.

2 min read

CCIE Collab preparation - Written Booked at Cisco Live!!!

Just wanted to throw it out here, not sure if you have had the same experience but finding Study material for this exam has been very hard for me, currently I’m looking at the INE Voice ATC. they look great but I see a bunch of irrelevant information as of now compared to the new blueprint on the exam. So far I have studied the following topics: QoS Cisco UC on UCS