IPICS supports PTT between IP Phones but also extend that to actual RF radios (Used by Police, Fire & Security personnel) as well as PSTN users (Users dialing from land/mobile lines) and PC/iPhone Clients. IPICS does a lot more than just PTT, it supports massive notifications and is typically used by Safety and Security departments:
Cisco IP Interoperability and Collaboration System (IPICS) is a complete IP-based dispatch and incidence response solution loaded with capabilities.
It provides an enhanced dispatch console, UHF/VHF radio interoperability, emergency first-responder notification, and integration with IP phones, cell phones, PCs, and mobile devices.
Fore more details, please refer to the URL below:
http://www.cisco.com/en/US/products/ps10165/Products_Sub_Category_Home.html
There is no direct integration between Barbee Informcast and Cisco IPICS however each IPICS channel is assigned a specific multicast IP address with a specific port number which can be shared over the same multicast domain with a Barbee Informcast channel that is assigned to a certain paging group. IPICS is typically two way communications and Paging by Barbee is just one way for the most part.
Thanks,
Maher
PDI Help Desk Physec Team
pdihd-physec@cisco.com
ATP Partners (IPICS/Access Control/Video Surveillance) can open "P D I" cases online at: http://www.cisco.com/web/partners/tools/pdihd.html#~four
More information about PDI can be found at: www.cisco.com/pdihelpdesk
PDI help desk at a Glance: http://www.cisco.com/web/partners/downloads/765/tools/quickreference/PDIHelpDesk_AAG.pdf