SIP Normalization

Hi ,

Recently , I had to configure a SIP trunk to operate with Microsoft Exchange as voicemail system but as the integrator of the exchange doesn’t know a lot about his system , he was unable to configure the voicemail boxes with the correct number so it gave me some mistake as Exhange was unable to resolve the  called number . So after some searches , I found that we can use the SIP Normalization as in the CUBE but this time directly in the CUCM .

The SIP normalization for SIP trunk on CUCM is based on lua ( an old application language) but even if you have no complex structure , you can easily modify the SIP stack in the inbound and outbound direction.

So you need to read the cisco documentation to master but after an half day you can already play with it to have something.

Lua is really something that you need to try when you need to update a little your sip fields/option and which is really powerful . I will come on later on this post to put a short example.



A new come-back

Hi ,


I know that it is a while that I have not posted anything but now the time has come to put something back on the website .

I will be nearly two years that I have been certified and it is time to go back for study , so a little revision of some concepts and new SNRD is well welcome !!!

For the rest , I will try to populate the blog with some interesting UC stuff may be not in regards with the CCIE certification but well in regards with the Unified Communication stuffs that I want to share with you and that you can may be use in your CCIE Labs .

So keep an eye on the blog because I will come back in the coming days for an interesting subject but I ‘ll let you discover 🙂






ATA 187 Discovery

Hi ,

It can seem dumb , but I’ve just played/discovered the ATA 187 ( which is working in SIP) . while I was trying to enter in the IVR menu , I was prompted for a password that we have not in the past.So after one or two google line , I finally discovered that the default password is cisco ( yeah I know , they are very hard 🙂 ) , so in numeric it is giving you 24726.

numb advise of the day 🙂 lol


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