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Through these value-added services your customers can call and be called collect. This includes reversed payment models.   KPN Telecom PSTN Collect Transit Connect Service KPN Telecom PSTN International to Telco PSTN Collect Connect Service KPN Telecom PSTN to Telco PSTN Collect Connect Service KPN Telecom Telco PSTN to KPN Telecom PSTN Collect Connect Service KPN Telecom PSTN Transit Handling Service