Posts

4 min read

Upgrade CUCM 9.1 to 10.5 - Procedure (No Prime Collaboration Deployment)

So with the introduction of Cisco Prime Collaboration Deployment, now upgrade any of your UC applications its easier and quicker than before. One of the big advantages that I see with this new product is that the product can have control of the overall infrastructure, starting from VMware all the way to the UC applications. For a better understanding of this product you can use the following link: (http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/pcdadmin/10_0_1/CUCM_BK_U9C58CB1_00_pcd-administration-guide-1001.html) - The previous is the one for version 10.x – I don’t see too many changes from version to version.

3 min read

Unity Express AA Transfer no Ring-back - Perception is Key!

This one was a very funny one and I’d like to share with you. After an install of a remote office using the following equipment: CIsco 2901 with an ISM for CUE and an AutoAttendant that when the office is open sends the call to a Hunt Group in CUCM and when they are close the **AA (**prompts) really kicks in. Nothing too crazy right? After 1 month of the installation received a call that when someone calls the main number they hear not ring back (only death air) until someone answers the call. After this one I had few things to look at but I knew this was a cosmetic issue.

1 min read

Debug CCSIP for Lunch

Well written, I was actually having the same issues but it was related to Codec negotiation, so my PSTN site is using a CP-7961 and noticed that my Dial-peer on the PSTN router was using ilbc, and this codec is not supported on these phones, http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cuipph/7962g_7961g_7961g-ge_7942g_7941g_7941g-ge/8_0/english/administration/guide/62adm80/62614241trb.html About the Author: Andres Sarmiento, CCIE # 53520 (Collaboration) With more than 13 years of experience, Andres is specialized in the Unified Communications and Collaboration technologies. Consulted for several companies in South Florida, also Financial Institutions on behalf of Cisco Systems. Andres has been involved in high-profile implementations including Cisco technologies; such as Data Center, UC & Collaboration, Contact Center Express, Routing & Switching, Security and Hosted IPT Service provider infrastructures.

3 min read

CCIE Collaboration Labs by Technologies

In order to organize myself for my lab preparation I need to work on my speed and accuracy, so I created quick and very general Lab outlines, which will be covering CUCM as of now. I created them so that I can guide myself and know where to begin, where to stop and don’t burn myself (hoping this strategy to work!!) I know I’m missing lots and lots of information and study domains, such as QoS and yes, QoS… Infrastructure and Multicast… I do feel confident with the Network infrastructure configuration, but need more work on QoS and Multicast, if you know of good QoS labs let me know… enjoy!

3 min read

How are you preparing for the CCIE Collaboration LAB ?

Just for curiosity, I would like to know how is the people on this group preparing for the CCIE Collaboraiton Lab, right now here is my preparation and roadmap: I have completed a lab in order to be able to study most of the technologies included in the blueprint, here is what I have: 3 Cisco 2811 64 PVDM2 1 Cisco 2821 128 PVDM2 1 Cisco 3750G 24 Port 1 Poweredge 1950 III 32GB - 2 TB HD - 2 XeonQuadCore E5240 2.4Ghz 5 Cisco 7961 2 Cisco 7965

3 min read

Upgrading CUCM from 9.1.2 to 10.5 – Issues

Hi there, today I have a customer that wanted to upgrade from CUCM 9.1.2 to 10.5 - which sounds pretty easy… think again, so this is a BE6K deployment where CUCM instance was configured with the recommended OVA from CCO. When starting the upgrade I found that the upgrade didn’t wanted to proceed as expected. and I was getting the following error: Installation of UCSInstall_UCOS_10.5.1.10000-7.sgn.iso failed An error has occured but no messages are available. This can happen when another administrator is working on the system at the same time and triggers an error.

1 min read

CCIE collaboration Lab

Here is my lab About the Author: Andres Sarmiento, CCIE # 53520 (Collaboration) With more than 13 years of experience, Andres is specialized in the Unified Communications and Collaboration technologies. Consulted for several companies in South Florida, also Financial Institutions on behalf of Cisco Systems. Andres has been involved in high-profile implementations including Cisco technologies; such as Data Center, UC & Collaboration, Contact Center Express, Routing & Switching, Security and Hosted IPT Service provider infrastructures.

2 min read

CWMS - Recordings button grayed out - Alerts button not found

So I stumbled across a really basic issue related to adding storage to WebEx, really simple right, just adding an NFS mount to it and done with the issue. In my particular case my NFS storage was running on 84% of capacity, which is OK, I mean, there is still some space on it, maybe not good practice to have it like that (will be changing it soon though) So when started I started a meeting to test the recording feature I noticed that my recording button was grayed out, which indicated that there was an issue. After doing some research I found the CWMS troubleshooting guide, which pointed to an issue with the alerts and the threshold of my storage, here is the document that explains it all:

9 min read

Andres’s toolbox, workflow and more…

Hi people, I wanted to take this opportunity and share my toolbox and workflow with you. In case you don’t know who I am and what I do here is a quick reference note. What I do and who I am: I’m a Lead Technical consultant specialized in Cisco Unified Communications and Collaboration (a mouthful, but really cool stuff … that, I can assure you!) – yes I do some other stuff but I could not call myself an expert, such as in routing & switching, Network design and architecture. I’m learning a bit more about security, which I though I knew something but not really!

1 min read

RADIUS vs TACACS+ - Cool document I found...

Liking the beginning of the document and some how knowing where the conversation will end up being….. "Cisco seriously evaluated RADIUS as a security protocol before it developed TACACS+. Many features were included in the TACACS+ protocol to meet the needs of the growing security market. The protocol was designed to scale as networks grow, and to adapt to new security technology as the market matures. The underlying architecture of the TACACS+ protocol complements the independent authentication, authorization, and accounting (AAA) architecture."