Currently my firm has a couple of telecommuters who currently are using Avaya 9640G phones with VPN connection back to a Cisco ASA to communicate to an Avaya IP PBX at our data center. The current firmware on it doesn't support IKEV2 and only supports IKEV, our vendor that supports the Avaya phones have contacted Avaya and they have communicated back to us that the phone doesn't have any new firmware for it that would support IKEV2 for the VPN connection. We are looking to replace the Avaya phone with an ip phone that would be able to communicate with an Avaya IP PBX and also can provide a VPN connection to the ASA with IKEV2. Was hoping that the CP-8841-3CPP-K9 would be an ideal solution. Is there another type Cisco IP Phone that you might be able to recommend? Thank you for your response.
If you have a VCS(e) deployed, you could look into MRA on the 8800 series phones.