I´ve recently migrated 3 branch offices of a customer who has a CCM cluster 6.1, and on everyone of them the model is the same: IP Phones and ATA186 to replace phones, a 2960 Poe and a Cisco 2801 to be DHCP server and SRST for phones, and GW to PSTN.
But on one branch office, the ATA186s didnt upgrade the firmware when register to CCM, and didnt get the SRST info. Them register to CCM cluster ok, and normally operate receiving and making calls. I had to manually upgrade the ATA186s, but the SRST config cant be corrected. It still says that the default router is the SRST and not the Cisco 2801. The ATA186s and IP Phones of that branch has the same device pool and srst config, but IP Phones did upgrade ok and has the right config for SRST.
I´ve checked replacing the ATA186, and it´s the same situation.
On the other two branch offices this situation didnt occurs, ATA186s upgrade normally and have the right SRST config.
It seems an issue with the WAN link, but if it´s the case, why IP Phones upgrade normally and gets SRST config ok?
Any idea will be appreciated.
Andres Pasten C.