@ciscosystems emergency responder (cer) interop with @hp_networking ??? #noproblem

Yep, no problem!  Dont believe the FUD that Cisco says that you need Cisco switches with Cisco Emergency Responder.     CER has a mode for assigning ERL to ip subnets.  If you're building/campus is big enough to warrant multiple ERLs... then you probably have multiple ip subnets anyway.

Read how to do it right in the Cisco CER manual:

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cer/9_0/english/administration/guide/CER0_BK_CBC9B8B3_00_cisco-emergency-responder-admin-guide/CER0_BK_CBC9B8B3_00_cisco-emergency-responder-admin-guide_chapter_0100.html#CER0_TK_S41D598F_00