210-060 · Question #178
What command will add a second line to a ephone-dn?
The correct answer is A. ephone-dn 1 Dual-line. In Cisco Unified CME, the dual-line keyword appended to the ephone-dn command enables a directory number to handle two simultaneous calls, supporting call waiting and shared-line appearances.
Question
What command will add a second line to a ephone-dn?
Options
- Aephone-dn 1 Dual-line
- Bephone-dn 3 dual-line
- Cephone-dn 2 dual-line
- Dephone-dn dual-line
How the community answered
(27 responses)- A89% (24)
- B7% (2)
- C4% (1)
Why each option
In Cisco Unified CME, the dual-line keyword appended to the ephone-dn command enables a directory number to handle two simultaneous calls, supporting call waiting and shared-line appearances.
The correct CME IOS syntax to configure a dual-line directory number is `ephone-dn <tag> dual-line`, where the tag is a numeric identifier for that DN. Answer A uses this exact structure with tag 1 and the dual-line keyword, making it valid. Without dual-line, the ephone-dn defaults to single-line mode, which can only hold one active call at a time.
While `ephone-dn 3 dual-line` is syntactically valid, it configures ephone-dn tag 3 rather than the DN in question; the tag number determines which directory number is affected and cannot be treated as interchangeable.
Similarly, `ephone-dn 2 dual-line` targets ephone-dn tag 2, a different directory number, and does not modify the intended DN.
`ephone-dn dual-line` is invalid IOS syntax because the numeric tag is a required positional argument immediately after the `ephone-dn` keyword; omitting it causes a parse error.
Concept tested: Cisco CME ephone-dn dual-line configuration syntax
Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/command/reference/cme_cr/cme_e1.html
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