You work as a network technician , study the exhibit carefully. The Acme Corp. uses H.323 to place calls to their supplier RR Industries. Acme also has a voice connection to an ITSP for long distance over a SIP network. Which configuration should Acme use to deploy the CUBE?
A.
service voice voip
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to sip
allow-connections sip to h323
B.
service voice voip
allow-connections h323 to h323
allow-connections h323 to sip
C.
voice service voip
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
D.
voice service voip
allow-connections h323 to h323
allow-connections h323 to sip
Explanation:
The Acme Corp connects to the ITSP via SIP Trunk and connects to RR industries via H.323. The Acme Corp itself uses H.323 so we have to enable protocol interworking with allow-connections commands:allow-connections h323 to h323: allow Acme Corp to communicate with RR industries (in both ways)
allow-connections h323 to sip: allow Acme Corp to talk with ITSP (Acme Corp can talk and ITSP can hear but not vice versa)
allow-connections sip to h323: allow ITSP to talk with Acme Corp (Acme Corp can hear and ITSP can talk but not vice versa)Notice that the configuration for H.323 and SIP interworking is unidirectional, thus if bidirectional interworking is required, you need to configure the mirror-matching statement as well.
Acme Corp doesnt use SIP so we dont need to configure allow-connections sip to sip.