Category: cisco

MGCP & SIP – DTMF Frenemies

[su_pullquote align=”right”]NTE-CA MGCP RTP-NTE has two implementations, which are Call Agent (CA) Controlled and Gateway (GW) Controlled. In CA-controlled mode, CA will negotiate DTMF relay capabilities on behalf of the gateways (SDP messages are sent  to CA). This is required in a setup where the other GW/Endpoint is  non-MGCP. After negotiation, CA instructs the MGCP …

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Permanent link to this article: https://tripplehelix.net/mgcp-sip-dtmf-frenemies/

Cisco UC Vulnerable to POODLE Attacks

Angry Poodle Goes GRRRR

Another Day Another Vulnerability… It seems as though we can’t even make it one consecutive week now without another key protocol or system being breached and or exploited. I suppose this is the cost of having more and more people with access to systems. And generations being raised at the keyboard, mind you not complaining …

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Permanent link to this article: https://tripplehelix.net/cisco-uc-vulnerable-poodle-attacks/

Cisco UC Shellshock Shocktober Update!

So by now you’re probably aware of the Shellshock BASH bug that is sweeping the interwebs and causing panic across the globe. Ok that might be an exaggeration but it is getting quite a bit of media attention. If somehow you are not aware of Shellshock here’s a good explanation from Ars Technica about it. For …

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Permanent link to this article: https://tripplehelix.net/cisco-uc-shellshock-shocktober-update/

CAPPS v8.0 Passed – Have Some Notes

So I should have posted these a while ago when I finished by CCNP Voice but better late than never here are some notes on the CAPPS 8.0 subject material.   Test blueprint https://learningnetwork.cisco.com/docs/DOC-8987 (CCO Required) Cisco Unity Connect – ~20k users Supports unified messaging (email, voicemail, fax via gui, tui, phone gui)   Single site deployment …

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Permanent link to this article: https://tripplehelix.net/capps-v8-0-passed-notes/

TVoice 8.0 Passed – Have Some Notes

So I should have posted these a while ago when I finished by CCNP Voice but better late than never here are some notes on the TVoice 8.0 subject material. Test blueprint https://learningnetwork.cisco.com/docs/DOC-8990 (CCO Required) 4 Elements of CUCM Environment Call Agent  / CUCM Network Infrastructure Cisco Applications CUPS Unity Connections UCCX Voice Clients   Network …

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Permanent link to this article: https://tripplehelix.net/tvoice-passed-notes/

CIPT1 Passed – Have Some Notes

So last Wednesday I passed my Cisco CIPT1 v 8.0 test bringing me 2/5 tests complete for my CCNP – Voice certification. Majority of the test like many have said pertains to media selection. So know your SW / HW media resources and MRG and MRGLs. Test blueprint can be found at https://learningnetwork.cisco.com/docs/DOC-8988. (CCO Required) Cisco …

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Permanent link to this article: https://tripplehelix.net/cipt1-passed-have-some-notes/

642-437 CVOICE v8.0 Passed – Have Some Notes

So last Friday I went in after ~2 1/2 weeks of study and passed the CVoice 8.0 exam. So I’m 1/5 of the way to my CCNP Voice. After a project wraps up at work, I’ll start in on CIPT 1. Here is a raw dump of the notes I took during my study that seem to …

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Permanent link to this article: https://tripplehelix.net/642-437-cvoice-v8-0-passed-have-some-notes/

CUCM 9.1 AMD Virtual Machine

So as you may or may not know Cisco has a hit and miss relationship with compiling for AMD processors. Case in point I’ve spun up CUCM 7.1.5 and 8.6SU2 on my AMD VMHost and it’s a happy camper. However I recently wanted to start working on setting up my lab with 9.1 and get …

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Permanent link to this article: https://tripplehelix.net/cucm-9-1-amd-virtual-machine/

Cisco TMS & IIS Authentication

TMS & IIS You Need to Play Nice! So one of the many projects I have is to upgrade our aged and dusty legacy Tandberg Management System version 10. To a new shiny Cisco TMS system version 14.1.1. Given the limited number of endpoints we decided to forgo the pain of doing an upgrade and …

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Permanent link to this article: https://tripplehelix.net/cisco-tms-iis-authentication/

Shut that beep up! (Silent Music on Hold)

So the situation is pretty simple. VP is having a lovely conference call with umpteen million staff members and in the middle of it someone has the brilliant idea to take another call placing the conference on hold…. Lets just say listening to the awesome Cisco hold music for the next 15 minutes didn’t go over as well as …

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Permanent link to this article: https://tripplehelix.net/shut-that-beep-up-silent-music-on-hold/