H11-811 · Question #216
Which of the following parameters must be set when you configure the ATO trunk on the U1900 series unified gateway? (Multiple Choice)
The correct answer is A. Port number B. Office route number D. Line selection mode. When configuring an ATO (Analog Trunk Office) trunk on the U1900 unified gateway, you must specify the port number (A) to identify the physical interface, the office route number (B) to define how calls are routed through that trunk, and the line selection mode (D) to determine…
Question
Which of the following parameters must be set when you configure the ATO trunk on the U1900 series unified gateway? (Multiple Choice)
Options
- APort number
- BOffice route number
- CPeer office IP address
- DLine selection mode
How the community answered
(23 responses)- A83% (19)
- C17% (4)
Explanation
When configuring an ATO (Analog Trunk Office) trunk on the U1900 unified gateway, you must specify the port number (A) to identify the physical interface, the office route number (B) to define how calls are routed through that trunk, and the line selection mode (D) to determine how lines are seized (e.g., sequential or circular hunting). These three parameters are the core identifiers for an analog trunk configuration.
Option C (Peer office IP address) is the distractor - it is required for IP-based trunks (such as SIP trunks), not for ATO analog trunks, which use physical port connections rather than network addresses. Confusing ATO with SIP trunk parameters is the classic trap here.
Memory tip: Think "ATO = Analog, no IP" - since it's analog, there's no peer IP address involved. The three required settings spell out the trunk's identity (port), destination (office route), and behavior (line selection mode).
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