UC has to unify both the end user experience AND the underlying infrastructure, and I don’t see Jabber moving Cisco towards the latter objective.
See
http://blog.tmcnet.com/the-hyperconnected-enterprise/unified-communications/jabber-acquisition-highlights-cisco-shortfalls-in-uc.asp
XMPP is an open standard. The article doesn't even make it clear exactly what Cicso has bought. Is it some company named "Jabber" that happens to provide XMPP servers and accounts?
The analyst definitely has no clue what he is talking about. 

SIP /SIPPING is just as free/open as Jabber and not a telecom standard.
It's governed by IETF so not free of administrations and committee works but still open.

UC has to unify both the end user experience AND the underlying infrastructure, and I don’t see Jabber moving Cisco towards the latter objective.
See
http://blog.tmcnet.com/the-hyperconnected-enterprise/unified-communications/jabber-acquisition-highlights-cisco-shortfalls-in-uc.asp
XMPP is an open standard. The article doesn't even make it clear exactly what Cicso has bought. Is it some company named "Jabber" that happens to provide XMPP servers and accounts?
The analyst definitely has no clue what he is talking about. 

SIP /SIPPING is just as free/open as Jabber and not a telecom standard.
It's governed by IETF so not free of administrations and committee works but still open.

Farewell Blabber, we hardly knew yee.