[VoiceOps] IAM Signals

[Scott Berkman]

There should be one and only one IAM per call, regardless of direction.  The
IAM is the first message in the SS7 call setup process, so even a canceled
call will have an IAM.  If you are forwarding a call back off-net, then that
would be 2 IAM's since it's probably two call legs.

I'm not familiar with the billing side of this though...

	-Scott

-----Original Message-----
From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org]
On Behalf Of Eric Hiller
Sent: Monday, February 28, 2011 4:59 PM
To: voiceops at voiceops.org
Subject: [VoiceOps] IAM Signals

I am trying to figure out where the excess of IAM messages is coming from.
We get billed for every signal and my bills recently have been saying:

SIGNAL SWITCHING...IAM...TERMINATING SIGNALS = 345 SIGNAL
FORMULATION...IAM...TERMINATING SIGNALS = 254,181 SIGNAL TNDM
SWITCHING...IAM...TERMINATING SIGNALS = 254,181

Is this the count of IAM messages that I am sending to the tandem then?
IE. I would have to make 254,181 calls outbound to generate these? Or are
these IAM messages inbound and outbound? Is the ratio 1:1 as far as IAM to
Calls?

Sorry for all the questions, I am just unsure on the IAM details.

Thanks!
-Eric

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