CCIE
Dial peer selection
Sometimes there is a need to configure more complicated configuration for incoming or outgouing calls. It’s good to remember what is an order of dial-peer’s selection by matching epcific elements. So it selects as below:
1. incoming called-address
2. answer-address
3. destination-pattern
4. voice-port
In the case of some issues start debug remembering that it is enough for gateway to match one of those elements.
From MSN to DDI
I really hate when customer plays unfair – doing big change in services without notice. It was this time with approximatelly 30 remote offices each with 2 bri interfaces.
In the half of them we met an issue. Conections wasn’t established properly. After searches solution was to reconfigure bri interfaces as below
isdn tei-negotiation first-call
isdn tei-negotiation power
isdn tei-negotiation powerup
isdn static-tei 0
Important: clear interface
CCIE Voice Lab
I saw a scheme how the lab looks like for CCIE Voice Lab exam. At least it is easier to learn build something similar to test, learn and troubleshoot most common issues and implementation tasks.
All looks clear except new version contains Cisco Presence – new to me – never implemented, never supported – yet. Secondary I wonder how important is Exchange server during lab exam. I hope it is just a tool to check some functionalities.
Incoming Fax
I checked how that works. For now only infoming faxes. Looks fine, except one disadvantage – e-mailing fax as tiff is not got option it is always a low quality.
!
fax receive called-subscriber $d$
fax interface-type fax-mail
mta send server 10.20.30.40 port 25
mta send subject UCC FAX from router -
mta send with-subject both
mta send filename fax_to_mail
mta send postmaster fax@dot.com
!
application
service onramp flash:app_faxmail_onramp.2.0.1.3.tcl
!
dial-peer voice 31 mmoip
service fax_on_vfc_onramp_app out-bound
destination-pattern 652
information-type fax
session target cto@dot.com
image encoding MMR
image resolution fine
!
dial-peer voice 32 pots
service onramp
incoming called-number 339657852
direct-inward-dial
port 0/0/0:15
!
Fax at gateway/router
Preparing to aquire all necessary knowledge I started to implementing Fax-to-mail solution in one of my projects.
Idea: Fax to mail via 2811 with E1 as additional service for Contact Center. Looks easy, but life shows it different.
Challenge: voip protocol, fax protocol and default scirpts depending of hardware 
CCNA Voice
The next exam has been passed – this time CCNA Voice with very good result. 65 questions and 1/3 was very difficult. The truth is I thought starting from 50th question I answered wrong to the rest of questions.
Practice and experince is what helps you the most. That’s the reason what makes me to think I will pass CCNA this time.
Big issue
Finally the “biggest issue” had been resolved. It was not so big as people thought at the begining. Well, anybody can say, that after all any problem seems easy, but when is unsolved it is horrible nightmare.
Asuming, month of exchanging logs, informations etc. and final result was that the cluster must be established by reseting.
P.D. Gracias a Maria – el voz bonito como la persona
Unified Communications Manager biggest issue
After disk failure I faced the biggest issue in my job. Recovery of publisher forced recovery of subscriber. That was information from Cisco. For now it looks like it didn’t helped at all. Cluster still not working properly, especially with extention mobility. Data exchange with CRS is also not perfect.
I hope Cisco will show something after digging logs.
It is a nightmare til now. How long will it continue?
ProCurves
HP accelarates with development networking segment, so it is time to look closer for “their” solutions. After Colubris aquisition it looks like HP has got the best solution for wifi. Colubris had got the most secure wifi solutions.
OK we will see 
GWGK
After long preparation I passed Gateways and Gatekeepers exam. Iwas more difficult I thought. Learning all necessary subject it was almost the same as CVoice plus some experience I’ve been learning during support. Pure GK knowledge is not huge. However exam suprised me and the effect was I passed below 900 points.
Asuming it is nothing strange for me that GWGK disappeared and new CVoice was rebulit with IP-IP gateways. It is exactly the same.
I hope I will get next for CCVP soon. Some hard learning time and I will be ready. The good thing is that at work I will be ready to built some lab for voice solutions. Finally. It is obvoius that not everything should be tested on production enviroments.