Very briefly, we are attempting to increase the number that are truly open. We talked about targeted, where it's competed amongst. We have also been increasing the open, pure open, where we are agnostic to the technology that comes back. There have been quite a few areas where we have moved 100% off of Cisco. Wi-Fi used to be completely Cisco. It is now predominantly HPE and Extreme networks.
Remote access was predominantly Cisco. That is now a service we get mostly through Bell, along with a few other providers. In-building we've added Extreme networks, Ruckus and Juniper. We are trying to expand the opportunities very deliberately to allow for that interoperability.
I would say that we are guided by the best practice, which is not to have too many vendors but to have a balance so that we are not reliant on one vendor. However, too many vendors create interoperability problems even when they claim to be interoperable. Maintaining that interoperability as they do upgrades and as the systems evolve over time tends to be a very real challenge. We want to make sure we are never reliant on one. We are deliberate in trying to expand, but we don't want to go to huge numbers either. We try to find a balance dependent upon the technology and who the leaders are in that marketplace.