Answer
See the explanation
Work Step by Step
Here's a simplified syntax diagram for telephone numbers in a typical format, similar to the United States:
```
Telephone Number:
┌──────────────┐
| Area Code |
└───┬──────┬───┘
| |
┌───┴──────┴───┐
| Regional Code|
└───┬──────┬───┘
| |
┌───┴──────┴───┐
| 4-Digit Number|
└──────────────┘
```
Explanation:
- **Area Code:** Represents the initial set of digits, enclosed in parentheses.
- **Regional Code:** Follows the area code and consists of three digits.
- **4-Digit Number:** The final part of the telephone number, consisting of four digits.
- The vertical lines represent the sequence of components, and the horizontal lines indicate alternatives or options.
