We had our SIP trunk connected to our CUCM 8.5 hacked into last month for two days before the phone carrier issues blocks to stop the calls. When I look in CDR it shows only the calls as coming from an unknown but in a rapid fire format. I did some research to help determine how this occured. I checked unity to ensure that the restriction tables are setup correctly which they are. This piece I do not understand is our voice network is not on the Internet. What are the ways our voice network can get hacked if not thru the internet and not internally?
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...
If you have 2 ISR routers, one acting as Failover, do we need to have both the same number of SRST licenses on the 2 routers?
No. You will only need the SRST licenses on the primary router. Because this feature...