An engineer is performing an international multisite deployment and wants to create an effective backup method to access TEHO destinations in case the call limit triggers. Which technology provides this ability?
A. AAR
B. CFUR
C. LRG
D. SRST
Which technology provides this ability?
I agree with answer C:
To reduce PSTN connectivity charges, system administrators might want to route calls to off-net destinations by using the IP network to bring the egress point to the PSTN as close as possible to the called number. At the same time, if the call’s preferred TEHO route is not available, it might be necessary to use the calling phone’s local gateway to send the call to the PSTN. This can be achieved by allowing all phones partaking in TEHO routing for a given type of number to match the same route pattern that matches the specific destination number and that points to a route list containing the TEHO egress gateway-of-choice as the first entry and the Standard Local Route Group as the second entry
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/8_6_1/ccmfeat/fsgd-861-cm/fslrg.html#wp1048957
figure 31.5 to support this correct answers. Other dumps suggest AAR. Though AAR would be an option if bandwidth were the issue, CISCO is looking for Local Route Group here. This is one of the classic CISCO Cert questions. The right way, the wrong way and the CISCO way. go with C.