Similar situation here. My company uses Skype for all in-house video calls, in large part because none of our clients uses it. So far, I haven't had any problems with it. The same cannot be said for Teams.
Linphone works good for internal use and is free to other linphone users.
The drawback is that unless you can in a newer version, you must choose between using your free linphone video messenger account OR your external sip account that can do landlines.
Having mentioned both in this thread: my small business is using grandstream phones that receive calls on twilio [because it’s the only one that will ring up to 10 extensions on a single login], and then competitively make outbound on all the others I mentioned based on dialing patterns.
And then we use linphone for internal video, since we’re a Linux shop and teams is out. [it’s wonderful but just exasperating that I can’t configure a second account and use it for everything.]
Linphone otoh will call a proper SIP address for free, eg ourtelephonenumber@twilio or oursipusername@sip.telnyx.com so I can conference in Cisco tandbergs, or I can conference in someone on one of the grandstreams that way. [when linphone is configured as a linphone rather than a SIP phone]
The drawback is that unless you can in a newer version, you must choose between using your free linphone video messenger account OR your external sip account that can do landlines.
Having mentioned both in this thread: my small business is using grandstream phones that receive calls on twilio [because it’s the only one that will ring up to 10 extensions on a single login], and then competitively make outbound on all the others I mentioned based on dialing patterns.
And then we use linphone for internal video, since we’re a Linux shop and teams is out. [it’s wonderful but just exasperating that I can’t configure a second account and use it for everything.]
Linphone otoh will call a proper SIP address for free, eg ourtelephonenumber@twilio or oursipusername@sip.telnyx.com so I can conference in Cisco tandbergs, or I can conference in someone on one of the grandstreams that way. [when linphone is configured as a linphone rather than a SIP phone]