...interaction between SMS and IM users on the mobile device is key to the uptake of mobile IM, bridging the two services and enablingIM users to experience advanced messaging in real time. SMS continuity is also a key part of the GSMA’s Personal IM initiative...
http://www.itbinternet.com/pr/20977
...blacklists and whitelists to allow or restrict IM exchanges. The IM Proxy solution extends security to the content level by enablingIM exchanges to be recorded. Full system redundancy Cisco is committed to eliminating all single points of failure...
https://www.intercall.com/files/WXConnect_Security_whitepaper.pdf