CDR is not my favourite topic, but yes they are important and people make a lot of noise when things go wrong. CAR can be a great tool… Read more “Understanding and Troubleshooting CUCM CDR and CAR”
Category: cucm
CUBE SIP Profiles – Normalizing Incorrect RURI/To Headers using Diversion
Had a strange requirement today. Needed to replicate a behaviour that is apparently quiet common on Asterisk, but haven’t seen it before myself. Our ITSP implemented a… Read more “CUBE SIP Profiles – Normalizing Incorrect RURI/To Headers using Diversion”
Unity Call Extended for Recording Fails
While implementing an Auto Attendent today, we faced a challenge as the client did not want to pay for professional recordings, and needed to implement quickly. If… Read more “Unity Call Extended for Recording Fails”
Lua Script Solves Call Forward Masking
Had to implement an Auto Attendant in Unity today. The client had a requirement to send after-hours calls out to the PSTN, but had to be routed… Read more “Lua Script Solves Call Forward Masking”
Lua Scripting – Replacing FQDN with IP in SIP Headers
A friend of mine at Cisco TAC pinged me a few days ago, asking to assist him with a case he’s working on that required a sip normalization… Read more “Lua Scripting – Replacing FQDN with IP in SIP Headers”
Lua Scripting – Proxied Manager Breaks MWI for Centralized CUC Behind SME
I’ve been working as design and deployment lead on a globally significant full Collaboration on-premise deployment for the last 3 months (think 120 CUCM across 9 Leaf… Read more “Lua Scripting – Proxied Manager Breaks MWI for Centralized CUC Behind SME”
Forcing MTP Killed the Mid-Call
There’s a common misconception with Cisco SIP trunking that the desperate “Forced MTP” will always solve no audio, one-way audio, DTMF inter-working and every other media negotiation… Read more “Forcing MTP Killed the Mid-Call”
DTMF Interworking and the MTP
I came across this a while back when deep diving MTP when preparing for the lab. I’ve pretty much got it down now, but I keep coming… Read more “DTMF Interworking and the MTP”
UCCX – CTI Registration Fails after CUCM Upgrade to 10.5(2) – CSCuq26061
Had a strange one today… A colleague completed a CUCM upgrade from 10.5 in-version. No issues were experienced after the minor upgrade. However, a few days later… Read more “UCCX – CTI Registration Fails after CUCM Upgrade to 10.5(2) – CSCuq26061”
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