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A grey route is a route used for sending SMS where the destination operator (on which the subscriber you are sending messages to is connected) does not get paid for the message. A grey route takes advantage of a legacy ‘sender keeps all’ policy in the GSM commercial framework, and although it is not regarded as fraudulent, it is frowned upon because it tends to be less reliable and is subject to immediate blocking by the destination operator.

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Last update:
‎06-03-2021 09:37 AM
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