1- 3.3(2c)
2- 12.2(15)T2
3- In the Setup IE
Cisco CallManager supports the following aspects of the QSIG protocol: QSIG basic call, direct dialing inward, certain supplementary services (name identification services), and certain QSIG generic functions services for support of supplementary services (call-related procedures for transport of application protocol data units and connection-oriented, call-independent application protocol data units). For information on whether your gateway supports the QSIG protocol, refer to the gateway product documentation.
http://www.cisco.com/en/US/products/sw/voicesw/ps556/prod_release_note09186a008011e2c8.html#1344646