On Hold 32 is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Business Management Services
• Telephones Messages & Music On Hold

North American Industry Classification System (NAICS) Categories:

• Office Administrative Services > Business Management Services
• Telephone Answering Services > Telephone Answering & Messenger Services > Telephone On Hold Audio Services

Standard Industry Classification (SIC) Categories:

• Business Services, Nec > Telephone Answering & Messenger Services > Message - On-Hold Svce
• Management Services > Business Management Services