No EOT from host
(Ready to receive)
Verify/test phone line connection.
Reset modem.
Reseat and retest modem.
Contact host to verify handshake protocol.
Typical protocol:
Terminal sends ENQ (Enquiry for transmission).
Host sends EOT (Ready to receive).
Terminal TX (Transmits) data block.
Host sends ACK (Acknowledgement-data block normal) or NAK (Negative Acknowledgement- data block abnormal).
Host sends ENQ.
Terminal sends EOT.
Host TX data block.
Terminal sends ACK or NAK.
1500
1700
1700w
1800
c4000
