Why are calls dropping?

[Morgs1]

Hello,

I am setting up a Mitel to Teams migration scenario and it's kind of going well.

I had calls from Teams to Mitel working but today something has changed and now I have this experience...

Teams thinks it's connected but I hear white noise. The Mitel handset did not ring. Then Teams fails reporting that it is offline and to check my connection. I find this in the Mitel logs.

RI7009 DPN 17 CRM/CIM ;2;*166*1 2 3 4#*234*Y`#

Can someone help me understand this output please?

Thanks
Morgs

 

[nytalkin]

This is CCS TRACE entry. The interpretation is: *166*1 3# Service information indicating that neither Call Offer nor Call Back When Free are possible. Other Supplementary Services may be possible.

I suppose you're entitled to your opinion, I'm just not going to suppose very hard.

 

[Morgs1]

Hi nytalkin... what is Call Offer?

 

[himdp]

Hi Morgs1, the message is a DPNSS message showing the call was cleared with clearing cause (CC) = 02 which is Network Termination (NT) which is "Used when the call is released by the network for any reason (e.g. due to a time-out expiring or service interactions)."

The supplementary strings are - *166* = SERVICE INFORMATION where the parameters are a combination from "The SERVICES Parameter is a single IA5 character allocated as follows:

1 = Call Offer not possible
2 = Executive Intrusion not possible
3 = Call Back When Free not possible
4 = Call Back Messaging not possible
5 = Hold not possible
6 = Call Back When Next Used not possible "

So, 1 2 3 4 is showing that-
1 = Call Offer not possible
2 = Executive Intrusion not possible
3 = Call Back When Free not possible
4 = Call Back Messaging not possible

And *234* = ISDN -CLEARING CAUSE where the parameter is a String used to convey a Clearing Cause value.

Also, The Call Offer service enables the Calling party to indicate to the wanted party, on an already established call, that
another call is being offered.

 

[Morgs1]

Thank you himdp.

Forgive me but I barely understood that

If my call is dropping do you have any suggestions as to why?

Thanks
Morgs

 

[himdp]

I can only tell you that the network is clearing the call.
DPNSS uses a CRM/CIM to clear a call including normal termination at the end of an established call, clearing the call because the terminal is busy (with information about whether call offer or callback is allowed), and clearing the call because of an unavailable number (There are a number of other Clearing Causes). There is no clue in the information you provide as to why the network is clearing the call; a full trace might give a clue but it is not guaranteed :-(