Thank you for taking the time to respond:
We switched them over to TLS 2.5 months ago and they have been fine for the first two months. They have IPO SE in a 11:11 VM w/5 locations using TLS (DigiCert) - no SBC. We have many other clients running the same everything with no issues.
All of a sudden a few weeks ago, one of the 5 locations lost all of their phones. They were all at "Acquiring Service". To make a long story short, we got IT on the horn, they said they would look into it and call me back. About 2 min later they all came back up, I called him to say whatever he did worked, and he told me he did nothing. We basically left it at that.
Fast forward to this week. First of all we have been have power outage all over (I'm in SC) from the Hurricane - so that isn't helping things.
Anyway, we get a call today, that another location (different from the first that happened a few weeks prior) has about 5 phones (out of 20 I believe) that are also showing "Acquiring Service". We get the firewall admin on the horn again - hes not seeing anything odd. So while they are talking, I go into SSA and just clear out all 3 "VoIP Security" Columns and then I see all of the 5 phones log in. This was earlier today when I made this post.
Now, in SSA I am seeing their public blocked for TLS 5061 under "Blacklisted Addresses". Why would the IPO be blocking this locations public? I'm wondering if that locations public gets blocked but some of the phones stay registered unless they reboot or something. With the below example, all of the phones were at "Acquiring Service" at this specific location. When I cleared this error, 20 or so phones logged back in. This was from my testing just now writing this response.
Also, they have an interesting public - thought I would note that. Starts with a 192 - not sure if things could be getting confused?
I will confirm your recommendations with their Firewall admin tomorrow am.
I went to add their public to the IPO's: VoIP > Access Control Lists > IP Whitelist however I had a few questions first.
- Why would just this locations Public be getting blocked in "Blacklisted Addresses"
- When I went to add this to the IP Whitelist, I wasn't able as it erred: "Maximum 20 IP Whitelist entries are supported" - I do not recall adding any however their are 20 in there apparently.
Thanks!