Table 25. Appropriate responses Commands Comments Appropriate responses (NSF) (CSI) DIS Identifying capabilities: from a manual receiver or an auto-answer unit (NSC) (CIG) DTC (TSI) DCS (NSF) (CSI) DIS (CRP) (TSI) (NSS) (PWD) (SEP) (CIG) DTC (PWD) (SUB) (TSI) DCS (NSC) (CIG) DTC Mode-setting command: from calling unit (TSI) DCS (NSF) (CSI) DIS (PWD) (SEP) (CIG) DTC Poll operation (CRP) (TSI) (NSS) (TSI) DCS (TSI) (NSS) Mode-setting command: from manual transmitter or automatic receiver CFR FTT (NSC) (CIG) DTC (PWD (SUB) (TSI) DCS This command is always followed by phasing/ training. (NSC) (CIG) DTC CTC Mode-setting command:
from the transmitter to the receiver (CTR) (CRP) (EOR-NULL) Indicates the next block transmission from the transmitter to the receiver (ERR) (RNR) (CRP) Any one of the following: (EOR-EOP) (EOR-EOM) (EOR-PRI-MPS) (EOR-PRI-EOP) (EOR-PRI-EOM) The receiver (ERR) (RNR) PIN (CRP) Any one of the following: MPS EOP EOM (PRI-MPS) (PRI-EOP) (PRI-EOM) Post-message commands MCF RTP RTN PIP PIN (CRP) (PPS-NULL) Post-message command for a partial page from the transmitter to the receiver (PPR) MCF (RNR) (CRP) Any one of the following:
(PPS-MPS) (PPS-EOP) (PPS-EOM) (PPS-PRI-MPS) (PPS-PRI-EOP) (PPS-PRI-EOM) Post-message commands for a complete page from the transmitter to the receiver (PPR) MCF (RNR) PIP PIN (CRP) (RR) Ask for the status of the receiver: from the transmitter to the receiver (RNR) (ERR) MCF PIP PIN (CRP) DCN Phase E command None 224 Chapter 6 - Troubleshooting EN