http://www.ehow.com/how_6862261_calculate-bandwidth-voip.html

http://tools.cisco.com/Support/VBC/do/CodecCalc2.do

http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080093fca.shtml
http://www.cisco.com/en/US/docs/ios/12_2t/12_2t4/feature/guide/ftnatrt.html
————————————————————————————————
http://ccnprecertification.com/2005/04/01/nat-using-a-route-map/
http://ccnprecertification.com/archives/nat_overview-251004.html
http://ccnprecertification.com/archives/nat-230305.html
http://ccnprecertification.com/archives/ip_nat_outside_source-310305.html

DHCP VRF EXCLUDE ADDRESS

———————————————–
https://supportforums.cisco.com/thread/165921

IP ACCOUNTING
————————
http://www.knossos.net.nz/ipacc/ipacc17.html
http://www.ciscopress.com/articles/article.asp?p=764234
http://yurisk.info/2009/01/17/cisco-ip-accounting-to-begin-with/

Dial Peer Configuration Examples
http://www.cisco.com/en/US/docs/ios/12_3/vvf_c/dial_peer/dp_app_a.html

Voice network signaling and control
http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a00800a6210.shtml

Configuring voice ports
http://www.cisco.com/en/US/docs/ios/12_2/voice/configuration/guide/vvfport.html#wp1054950

Cisco IOS voice monitoring and troubleshooting  —  FXO interfaces
http://docwiki.cisco.com/wiki/Cisco_IOS_Voice_Troubleshooting_and_Monitoring_–_FXO_Interfaces

Command Lookup Tool (Configuration commands)

http://www.cisco.com/cgi-bin/Support/Cmdlookup/home.pl

Ouput Interpreter (analyse of syslog events, showcommand outputs, …)

https://www.cisco.com/cgi-bin/Support/OutputInterpreter/home.pl

Error Message Decoder (analyse syslog event messages)

http://www.cisco.com/cgi-bin/Support/Errordecoder/index.cgi

Configuration Tool (official pricelist)

http://www.cisco.com/cgi-bin/Support/Errordecoder/index.cgi

Cisco Passwort-Cracker

http://www.trinler.net/de/service/tools/ciscopw.html