For U1900, which of the following steps are involved for configuring a SIP trunk? (Multiple Choice)

Question

Options

• AConfigure routing upon a call failure.
• BConfigure the office route.
• CConfigure the domain name and IP address of the peer device.
• DConfigure number mapping.

• A
  9% (2)
• B
  77% (17)
• D
  14% (3)

Explanation

Configuring a SIP trunk on the U1900 requires two foundational steps: defining the office route (B), which establishes the logical trunk path between the U1900 and the external SIP network, and specifying the domain name and IP address of the peer device (C), which tells the U1900 where to send SIP signaling. Together, these two steps form the minimum required configuration to bring a SIP trunk online.

Option A (call failure routing) is a fault-tolerance or redundancy setting applied after the trunk exists - it's not part of setting up the trunk itself. Option D (number mapping) is an optional dial-plan feature used to transform digits during routing, but the trunk can function without it; it's not a prerequisite for trunk creation.

Memory tip: Think of SIP trunk setup as "build the road, then tell the GPS where to go" - the office route is the road (B), and the peer IP/domain is the destination address (C). Failure routing and number mapping are add-ons you configure only once the road is already open.

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