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20. FAX CLASS 2.0 RESPONSES
Below is a list of possible responses that a fax can give to the DTE during a Class 2.0 fax
call. They are defined in ITU-T T.32 /9/.
Response
Description
+FCI:
report a CIG frame received from remote, example: +FCI:"
+FCO
indicate a facsimile connection, issued in the beginning of Phase B
+FCS:
report a DCS frame (sent or received), example: +FCS:0,3,0,2,0,0,0,1
+FDM
indicate transition to data modem operation
+FET:
report the post message command in a receiving session, example (EOP): +FET:2
+FHS:
report call termination status
+FHR:
report a received HDLC frame (only reported when +fbu has been set to 1)
+FHT:
report a transmitted HDLC frame (only reported when +fbu has been set to 1)
+FIS:
report the capabilities of the remote station (from received DIS frame)
+FNC:
report a received NSC frame
+FNF:
report a received NSF frame
+FNS:
report a received NSS frame
+FPI:
report remote ID, CIG
+FPO
an indication of the remote having indicated that it has a document for polling
+FPS:
Phase C page reception response
+FTC:
report remote capabilities, DTC
+FTI:
report remote ID, TSI
+FVO
Transition to voice, an indication of a procedure interrupt and suspended session
21. SUPPORTED AT COMMAND STANDARDS
21.1 SUPPORTED STANDARDS
All ITU-T V.25ter /1/, ETSI GSM 07.07 /3/, and ETSI GSM 07.05 /4/ commands that are
mandatory and those optional ones that are applicable to GSM products are included in this
document. Also those 'de facto' commands that are used widely among modems, and
commands specific to NMP products are also presented. Note that V.25ter is a combination
of three TIA standards (TIA-602, TIA-615, IS-131).
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