https://community.cisco.com/t5/ip-telephony-and-phones/cp-7841/m-p/4188243#M393079 <P>I purchased 2 CP-7841 phones, I'm trying to set them up to use with my VOIP provider, the phones asking for Activation code or domain, what do I enter to make the phone usable?</P> Tue, 24 Nov 2020 17:44:02 GMT NesherAdom 2020-11-24T17:44:02Z https://community.cisco.com/t5/ip-telephony-and-phones/cp-7841/m-p/4188243#M393079 <P>I purchased 2 CP-7841 phones, I'm trying to set them up to use with my VOIP provider, the phones asking for Activation code or domain, what do I enter to make the phone usable?</P> Tue, 24 Nov 2020 17:44:02 GMT https://community.cisco.com/t5/ip-telephony-and-phones/cp-7841/m-p/4188243#M393079 NesherAdom 2020-11-24T17:44:02Z https://community.cisco.com/t5/ip-telephony-and-phones/cp-7841/m-p/4188408#M393080 <P>If they are running enterprise FW which is likely due to the PN that you posted, when the TFTP server is not reachable that is the expected behavior, you need to enter the activation code for registration or domain for MRA, both assume you use a Cisco call control in the backend.</P> <P>&nbsp;</P> <P>There are plenty of threads that cover registration to 3rd party PBX while using enterprise FW, start by reviewing those. You'll have to provision all the configuration files the phone would expect from a Cisco call control in the same format, replacing your VOIP provider info as required. If the thread refers to 3PCC/MPP devices, that is not applicable to you</P> <P>&nbsp;</P> <P>You can pay to migrate to the 3PCC/MPP FW that would enable you to use a built-in web server for all the configuration you would need with your provider, all details at upgrade.cisco.com</P> Tue, 24 Nov 2020 23:26:03 GMT https://community.cisco.com/t5/ip-telephony-and-phones/cp-7841/m-p/4188408#M393080 Jaime Valencia 2020-11-24T23:26:03Z