Archive for October, 2008

Q&A – Dial Plans

Sunday, October 19th, 2008

Hi Ted,

We are in the process of rolling out call manager 6 cluster in Europe. Currently We have call manager 5 Cluster in NA.

1) Inherited the system. ( It has 4 digit dial plan which will be starting to overlap soon)

2) We have inter cluster trunk setup ( no gate keeper)

3) VOIP will be deployed in France, UK, Romania, Germany Sweden and more….
a) since these countries use different dial plans ( Dial different length of digits , Emergency services etc…
b) Possible integration into a Avaya and CME deployment)

What is the best dial plan for this situation?

Currently the Consultant has recommended 5 digit dial plan?

1) What about site codes? for each country or office location?

How do get out of this mess…. I scoured the net and found no real world examples. I have ready the SRND but I am still lost. I have searched the Cisco net forms also.

Many Thanks in advance.



Unity, the phantom menace!

Saturday, October 4th, 2008

We had this one case open for like a month, and I decided to take a crack at it a few weeks ago. I thought it was a pretty funny issue, that I don’t see too often.

So there was this one user, that kept getting missed calls like 5-10 times a day. And they were always showing to be coming from the Unity server (based on the Caller ID). This was pretty annoying for sure and it was only one user that kept getting these phantom calls.

I’m thinking to myself, when does Unity call anyone? Unity can do message notification right? We get a new Voice mail and we can have Unity page, email or call us. I figured this was probably a good place to start, looking at notifications in Unity.

This first thing I’m thinking is there is no way I’m going through every subscriber and checking their notifications. I knew I wanted to be able to search subscriber notifications and see if any were set to dial her extension (let’s say her extension was 5125).

I opened the Tools depot and used the “Subscriber Information Dump”. You can basically use this tool to write all the subscriber properties to a CSV file and be able to search through them easily. I searched through and didn’t find anything that exactly matched her extension (5125).

I ran this during the day and didn’t affect the system, just make sure to monitor task manager when doing these things. You can also check the “call viewer” to make sure there aren’t a lot of calls to the system.

See below for Subscriber Information Dump location ::

subscriber dump


One-way audio?

Saturday, October 4th, 2008

I had a nice one-way audio issue I was troubleshooting on Friday.

Here’s the setup ::

Cali HQ site < -----> MPLS Cloud < -------> LA Regional office (PRI located here for LA Sales Office PSTN access)

Cali HQ site < -----> MPLS Cloud < -------> LA Sales office

This is a pretty simple setup where you have the HQ site with Call manager which connects to the MPLS cloud. And you have the Remote Regional and Sales office that also connect to the same MPLS cloud.

The issue was regarding the LA Sales office which was reporting one-way audio issues for outside (PSTN) and on-net calls (across WAN).