What are the supported feature for LYNC Server 2013 WITHOUT Telephony

Question

Hi
I have a new customer who is asking for LYNC Server 2013 without to use VoIP Support.
The would like to use the LYNC-SKYPE connectivity but without LYNC calls.
Most of their internal users are using SKYPE.
The Question is now, what Features are possible for example:
FEATURE-LIST
See other’s presence
Manage own presence
See presence in Office
Contact management
Contact card
PC-PC and multiparty IM
PC-PC and multiparty file transfer
Persistent Chat
PC-to-PC computer audio calling
PC-to-PC computer video calling
PC-to-PC presence display, IM, audio, and video with Skype users
But what of the above feature list is possible without using VoIP ??
And how works that LYNC WebApp Client without VoIP? Is it possible to route Audio/Video over the internet by using that LYNC WebApp Client in LYNC 2013??
Thanks in advance ;-)
Kind regards
Michael
Kind regards Michael Damaschke

Answer 1

All of that is possible without PSTN connectivity or the plus cal.
When you say VoIP, do you mean audio chatting over TCP/IP in the purest form, or do you mean specifically telephone calls?
Technially PC-to-PC computer audio calling is VoIP, or voice over IP, but if you're talking about connecting it to a PBX or the phone network, you don't need it for any of the above.  It works wonderfully and is quite a bit cheaper without it due to
fact that you won't need to license the plus cal for enterprise voice or the Exchange enterprise cal for voicemail. 
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