CCVP

Dial peer selection

Monday, March 1st, 2010 | CCIE, cvoice | No Comments

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.

Tags: , ,

CCNA at last passed

Thursday, February 18th, 2010 | out of topic | No Comments

After long time since I started Cisco certification finally I passed CCNA. Well I tried to pass it as I remember 3 years ago, but because of some issues and a lot of work, lack of knowledge I failed.

Working a lot at voice field I have been passing voice exams with no problems and to make that all voice exams have sense I needed CCNA. Practice is not so bad as many people thinks, but all those details and exact numbers. Many questions was for me only possible to solve on logical thinking.

However I’m almost 100% involved in voice so it left me only QoS to become CCVP. It looks like I certify from the end to the begining.

Tags: ,

From MSN to DDI

Thursday, December 31st, 2009 | CCIE, ip telephony | No Comments

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

Tags: , ,

Incoming Fax

Thursday, December 3rd, 2009 | CCIE, fax | No Comments

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
!

Tags: , , , ,