Virtual Call Capability

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Virtual Call Capability

a Call Set -up procedure and a call disengagement procedure determine the period of communication between two Data Terminal Equipment s (DTEs) in which User data are transferred by the Network in the Packet Mode of Operation

end-to-end Transfer control of packets within the network is required

data may be delivered to the network by the Call Originator before the call Access Phase is completed, but the data are not delivered to the Call Receiver if the Call Attempt is unsuccessful

the network delivers all the user data to the call receiver in the same Sequence in which the data are received by the network

multi-access DTEs may have several virtual calls in progress at the same Time .

Source: from Federal Standard 1037C