300-070 · Question #188
An organization with a centralized dial plan has user extensions as the last four digits of the external DID number. Some users at the head office have overlapping extensions with the users at the…
The correct answer is A. Use site codes. Site codes (also called location codes or steering codes) are short numeric prefixes that uniquely identify a site. When two sites have overlapping 4-digit extensions (e.g., both have a user at extension 1001), users can still reach each other by dialing the site code followed…
Question
An organization with a centralized dial plan has user extensions as the last four digits of the external DID number. Some users at the head office have overlapping extensions with the users at the branch offices. Which action fixes this issue without changing user extensions and allowing users to call each other across sites?
Options
- AUse site codes.
- BUse different CSSs for both sites.
- CPlace both extensions in different partitions.
- DChange the number of digits in the internal extensions.
How the community answered
(33 responses)- A82% (27)
- B12% (4)
- C3% (1)
- D3% (1)
Explanation
Site codes (also called location codes or steering codes) are short numeric prefixes that uniquely identify a site. When two sites have overlapping 4-digit extensions (e.g., both have a user at extension 1001), users can still reach each other by dialing the site code followed by the extension (e.g., 81001 for head office, 91001 for branch). This approach preserves existing extensions and requires no structural dial plan changes. Using different CSSs alone (option B) would restrict reachability rather than resolve overlap. Placing extensions in different partitions (option C) separates them for routing purposes but does not provide a method for cross-site dialing when the digits are identical. Changing the number of digits (option D) directly contradicts the requirement to leave extensions unchanged.
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