After I purchased Cisco ATA 186, I connected to Cisco Call Manager 3.3.4, and it worked. I don't know the version of firmware at that time.
Recently, I used my ATA 186 to test PC to Phone call. It is H323 gatekeeper. So, I upgraded the latest H323 3.01 firmware to my ATA 186. At this point, Cisco Call Manager did not get involved.
Today, I used this H323, 3.01 version of SCCP, SIP and MGCP tried to reconnect to the call manager, and it failed. It is like ATA 186 and call manager does not know each other.
How do I fix it ? Should I use the default firmware that came with the device ? Can you tell me what is the default firmware ?
Product ID is ATA186-I1-A.
