Occasional intermittent fast busy on 9+ local and 9,1+ long distance

[James Gladwell]

I have no voice experience other than managing the Directory Numbers of internal phones.  Our two voice guys have left in the last few months and there was no real training about what to do for cases like this.

The calls go out two different T1s (from what I can tell) on a 2911.  Is there a way I can tell how many lines are being used? I am wondering if maybe due to the number of phones we have added lately tying up all of the external lines.  I really have no idea!

[Amine Nouasri]

James,

A good place to start your troubleshooting is to pull the CDRs. You can import the CDRs to a CSV file a look for calls with disconnection code other than 0 or 16 and also to determine which side dropped the call. You can post here your findings and we can tell you the meaning of the error code.

Please rate helpful answers!

[James Gladwell]

Where would I pull that? Off of the gateway or the call manager?

[Amine Nouasri]

Cisco Unified Serviceability > CDR Analysis and Reporting > CDR > Export CDR

[Rob Huffman]

Hi James,

You are most likely correct in your troubleshooting ideas. Whenever

you increase the number of phones/users you increase the PRI/Gateway

usage at the same time so it only makes sense that you may be having

intermittent "all trunks busy" type conditions.

In addition to the great info from Amine (+5 "A") you will want to look into

RTMT (Real Time Monitoring Tool) with CUCM to help determine the PRI channel usage.

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/service/8_6_1/rtmt/rtinst.html

And the report in here;

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a0080a5d2c9.shtml#PRI

You should also be able to engage your Telco provider to help you with a Traffic Study

that will also determine what additional resources may be required.

Cheers!

Rob

"Why do the best things always disappear " 

- The Band

[James Gladwell]

Thanks guys.

I have identified the circuits and am asking AT&T to perform a traffic study on them to see what we can see.

When I tried to get the CDR, I got this:

* For the following Nodes, CDR Enabled Flag is not activated though CallManager Service is activated. Hence no CDRs will be generated on these nodes.

10.36.27.140

10.36.27.141

10.36.78.75

The .140 and 141 nodes would be the ones where the external calls flow through.