Address Field Phone
This project extends the Address Field module to add support for some additional fields (Phone number/extension, Mobile number and Fax number) that are stored with other address fields.
This module may or may not be what you need.
- If you want phone number in Drupal Commerce, you might want https://drupal.org/node/1179804.
- If you want phone number directly in Address Field, this project makes that happen (from here).
Although I agree with the address field maintainers' sentiment to keep the module simple, I think having separate contact information for each location is essential in quite a few use cases, especially when using the module outside of the context of Drupal Commerce.