Signius

Signius is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Answering Bureaus
• Telephones Answering Service

North American Industry Classification System (NAICS) Categories:

• Telephone Answering Services

Standard Industry Classification (SIC) Categories:

• Business Services, Nec > Telephone Answering & Messenger Services > Telephone Answering Service