I am searching for a replacement for an existing key system, and am interested by the uc520, but I have a few questions:
Is it possible to configure the UC520 in a keysystem configuration and use a remote FXS ATA to serve an analog line to a fax machine and/or answering machine? Is it possible to have remote FXO gateways and can they be generic inexpensive SIP based FXO gateways and still be used in a keysystem configuration?
Is it possible to set up the UC520 in the keysystem configuration and have the 7931G configured to monitor the status of other VOIP sets? For example, I know all the sets will show the status of a shared line, but can the 7931G be configured to also show which VOIP phones are in use ?
Is it also possible to use a mixture of 7931G's and spa941's (SIP) with the UC520 in a keysystem configuration?
Thanks much for any advice here. -Don