A collaboration engineer is configuring SIP interdomain federation for Cisco IM and Presence. The external domain cannot be discovered using DNS SRV. If the external enterprise domain is ciscocollab.com, what destination pattem should the engineer use for a static route?
A. com.ciscocollab.*
B. _sipfederationtls._tcp.ciscocollab.com
C. *.ciscocollab.com,*
D. .ciscocollab.com
B is correct
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/im_presence/interdomain_federation/12_5_1/cup0_b_interdomain-federation-1251/cup0_b_interdomain-federation-1251_chapter_011000.html#CUP0_RF_D3537D00_00