Avaya Exam 37820X Topic 1 Question 18 Discussion

Refer to the Scenario: IT-FAC.

With their new IP Office, you decide to propose twinning to the mobile users. To twin external calls from the IP Office to these mobile users, on-premise or off-premise, requires two trunks; incoming and outgoing. To support 10 simultaneous calls requires 20 trunks.

In addition to the number of trunks required to extend calls, what other design issue must be considered?