Hi,
We have just changed our old Philips digital telephone system to Cisco's VoIP system. So we don't know much about this thing.
From another office, we got a lot of telephones -- Siemens OpenStage 15 HFA.
We would like to know how to configure these telephones to work with Cisco's VoIP system. I mean, what device should we take?
Here's the info about our Cisco system: System version: 11.5.1.13900-52
Thanks in advance.
