Using RTMT to watch Gateway Load

Unanswered Question
Feb 12th, 2007

I was asked to look for a way to get Report on our E1 links of our H323 Gateways. So i tried using RTMT (Call Activities Reports Archive) and got the attached diagram as Result.

Can anyone tell me how this Diagramm can tell me if our 4 E1 (120 Channels) are enough or should we consider putting other E1 link on the Gateways

I have this problem too.
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Stoyan Stoitsev Tue, 02/13/2007 - 02:24

If the above diagram really shows only the calls out of your E1 interfaces, then you have at least 7 E1 interfaces so you can reach the 200 simultaneous calls.

Generally you need gateway utilization statistics - attempted and completed calls. Then you have to calculate your Erlangs - check that site on how to do this.

You can also try this cisco link

Jayd000007 Tue, 02/13/2007 - 07:24

I did the Math, found out i need 60 to 80 Lines, we have 4 E1=120, so i thought we should be fine.

I used RTMT (H323 Active Calls) and it showed me a MAX of 60 on Busy Hour.

The CDR Statistic (Gateway Utilization) show also 100% of link are used, which is seems not true.

is it a Bug on those Reports (Gateway Utilization and Call Activities? Or am i missing something?

Stoyan Stoitsev Wed, 02/14/2007 - 04:17

In CDR you should specify how many ports you have on that h323 gateway

System>System Parameters>Gateway Configuration

Jayd000007 Wed, 02/14/2007 - 04:23

I already did that, i specified in CDR: 60 ports (2E1) for each Gateway we have.

redrobish Tue, 05/15/2007 - 18:09

Hi Jayd000007,

How did you get the report on the Gateway on RTMT? Can you pls. teach me how to get that "diagram report" ?


Zin.Karzazi Wed, 05/16/2007 - 03:16

On your CCM webadmin page:

Got to aplication->Cisco Callmanager Serviceability->Tools->Serviceability Report Archive



redrobish Wed, 05/16/2007 - 15:09

Tnx Zin,

All I can see is alert reports. Maybe it's not setup in my CCM. Could you pls. teach me how?



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