https://community.cisco.com/t5/ip-telephony-and-phones/ata-191-mpp-to-on-premise-cucm-firmware/m-p/4966554#M412910 <P>Can I ask if the reverse of this also true ? So I need to convert from current ATA191.12-0-1-29.loads (registered to on-prem UCM) to MLPP load so I can then register it with MS Teams phone system ... thanks.&nbsp;</P> Mon, 27 Nov 2023 04:32:37 GMT mrvoipstuff 2023-11-27T04:32:37Z https://community.cisco.com/t5/ip-telephony-and-phones/ata-191-mpp-to-on-premise-cucm-firmware/m-p/4713844#M406586 <P>CUCM 12.5</P><P>ATA 191 is not registering with CUCM, when I checked the ATA web page, found that ATA has MPP firmware "11-1-0MSR3-9", is it possible to change the firmware to on-premise (CUCM), I have not found any documentation specific for ATA 191 regarding this concern.</P> Mon, 31 Oct 2022 17:26:17 GMT https://community.cisco.com/t5/ip-telephony-and-phones/ata-191-mpp-to-on-premise-cucm-firmware/m-p/4713844#M406586 faraz1234 2022-10-31T17:26:17Z https://community.cisco.com/t5/ip-telephony-and-phones/ata-191-mpp-to-on-premise-cucm-firmware/m-p/4713850#M406588 <P>No, unlike IP Phones, the ATAs cannot be migrated, reach out to the vendor and discuss either returning it or swapping it for one with enterprise FW.</P> Mon, 31 Oct 2022 17:37:06 GMT https://community.cisco.com/t5/ip-telephony-and-phones/ata-191-mpp-to-on-premise-cucm-firmware/m-p/4713850#M406588 Jaime Valencia 2022-10-31T17:37:06Z https://community.cisco.com/t5/ip-telephony-and-phones/ata-191-mpp-to-on-premise-cucm-firmware/m-p/4966554#M412910 <P>Can I ask if the reverse of this also true ? So I need to convert from current ATA191.12-0-1-29.loads (registered to on-prem UCM) to MLPP load so I can then register it with MS Teams phone system ... thanks.&nbsp;</P> Mon, 27 Nov 2023 04:32:37 GMT https://community.cisco.com/t5/ip-telephony-and-phones/ata-191-mpp-to-on-premise-cucm-firmware/m-p/4966554#M412910 mrvoipstuff 2023-11-27T04:32:37Z