Do you have a pair of CTI Object Servers - one on each side A PG and side B PG?
Are they talking to each other correctly? When you say you see lots of errors in the DOS windows, it's concerning. If there has been no change to the tracing levels, there should not be that much activity in these windows.
Once the CTIOS have been installed and configured correctly, it's very unlikely that they will have a problem later.
But what can happen is that the binding order of the NICs can change - so check under the Network Adapters to make sure the public NIC is before the private NIC. If the private NIC is first, the two CTIOS will appear to operate correctly but will not be talking to each other.
If there's any network errors the PG will definitely let you know, check the PIM logs also just to see if other processes are complaining about the same thing. Also, check to see if this happens to all agents regardless of what side they registered to.
That sounds like an error from your CTI server rather than from your CTI Object Server. Both PGs run as a pair - one active, one passive. Both CGs run as a pair - one active, one passive. Normally the active CG is on the active PG, but that does not have to be the case. If the active CG is running on the active PG, stopping that CG will immediately make the passive CG active. Each CTIOS run somewhat independently, with a heartbeat between them. Both connect to the CGA on 42027 and CGB on 43027 (these are the default ports). Perhaps after close of business today you need to check the operation of both CTI servers - stopping and starting in turn to ensure the passive becomes the active OK.
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
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