Ext to Ext not working

[drawntogether]

I am not real familiar with Mitel phone systems. I have five locations and of those five two of them cannot dial extension to extension I can only assume that in the diagnostic section there is a log I can look at that might give me clue as to what is wrong. They can make outbound external calls just fine.

What log would that be that I need to look at?

Release Version 6.2 9
Call Processing Version 6.2.2.13 US

[Tech Electronics]

drawntogether,

I am not sure a log is going to show you anything that would help you.

Do you know for sure that those sites are networked together and can do extension to extension calling?

Were they able to do it before and they can't now?

Thanks,

TE

[drawntogether]

Yeah, they could. There's an SD-WAN project in progress, and BGP policies are managing the traffic, but for some unknown reason, it's not working for the phones. Static routes resolved the issue. It would be great if there were a call manager or some kind of softphone we could install to test these things without disrupting the end user, but I couldn't find anything

Thanks

[Tech Electronics]

drawntogether,

Well, you have to remember that BGP isn't a trusting network protocol and doesn't always use the best path to reach its destination.

Systems like the MiVO-250 and voice in general do not like delays and will most likely see them as disconnected due to high latency.

Here are the port numbers you will need to know based on what type of connection you are making through your firewalls.

53xx phones:
TCP - 5566, 6800-6802, 3998-3999
UDP - 6004-7039, 5567, 5004-5007, 50098-50508
TFTP - 69, 20001

Database Programming and System Administration and Diagnostics:
TCP - 44000, 443, 22

Network Systems:
UDP - 6004
TCP - 5570

You may also want to go into each of your systems and change the Audio RTP Type of Service and Data Type of Service for each IP Connection to 184. This value requests Expedited Forwarding if used for Differentiates Services (DiffServ). If used for IP Precedence, this value requests critical precedence, low delay, and best throughput.

To get there go to System > Devices and Feature Codes > IP Connections > Node:
Audio RTP Type of Service - 184
Data Type of Service - 184

Thanks,

TE