| 1. | Monthly service is a summary of the basic service and optional service.
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| 2. | Some villages provide their own police and other optional services.
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| 3. | Airlines also differ in how they inform stranded passengers of available or optional services.
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| 4. | The next section on your bill is optional services.
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| 5. | I blocked every optional service sold, except call-waiting.
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| 6. | Caller ID would be considered an optional service.
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| 7. | Optional services are services ordered by the consumer and are not necessary to use your phone.
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| 8. | Most companies also issue disclaimers, saying they don't provide prenatal care and are an optional service.
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| 9. | Several companies offer optional services in addition to the standard two-way page, which is provided by SkyTel.
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| 10. | Optional services can be steeply priced, too; Datek Online, for instance, charges $ 50 to mail stock certificates.
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