Hi Tom,
UC500 is not positioned as a branch office gateway. UC500 product has been designed to address a certain market.
For any customer looking for routing or gateway support plus UC then we recommend to use an ISR.
MGCP - not supported on UC500.
Megaco - not supported on UC500.
RSVP - supported
RTP - supported
IGMP - not supported on UC500.
SDP - UC500 supports SIP therefore SDP is supported as it ise used for describing multimedia sessions.
Please refer to the documentation below for more info about SBCS:
http://www.cisco.com/en/US/docs/voice_ip_comm/sbcs/roadmap/sbcs_uc500_roadmap.html
Have a nice day!
Teresa Stevens
-----
If this is helpful, please rate!
Regards,
Tere.
If you find this post helpful, please rate! :)