Comtrol AT Commands for SmartACFL User Manual

Page 132

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Command Reference Manual

5-10

Conexant

100722A

5.3.5.2 Continue Document Reception
The DTE may issue a +FDR command in Phase D, which releases the post page message, and indicates readiness to
receive another page after receipt of a Multipage (+FET:0) or PPS-NULL (+FET:3) message. The DCE response will be:

CONNECT
(<DC2> needed from DTE here)

<Phase C data stream)
<DLE><ETX>
+FPTS:<ppr>, <lc> [,<blc>, <cblc>]
+FET:<ppm>
OK
(DTE must issue +FDR command to release post page response)

If done receiving:

+FHNG: <hangup cause code>
OK

Continue page reception

5.3.5.3 Phase C Data Framing
Phase C data may be presented to the DTE in stream mode. The DCE will transfer a stream of data to the DTE, followed by
the <DLE><ETX> stream termination characters. The DCE will filter the stream as described in Section 6.1.2.

5.3.5.4 Phase C Data Format
The received data format is negotiated under T.30 reported by the +FDCS:VR,BR,WD,LN,DF,EC,BF,ST response.

The DCE will delete the terminating RTC (6 EOLs) patterns.

5.3.5.5 <CAN> - Escape from Reception
From the +FDR command until the end of Phase D Date, the DCE is in a data transfer state, and will not respond to DTE
command characters. The DCE will respond to three ASCII control characters: <DC1> (017) and <DC3> (019) flow control
characters, and cancel <CAN> (024).

Upon receipt of the <CAN> character, the DCE will terminate the reporting of received data by sending trailing <DLE><ETX>
characters to the DTE, and will then execute an implied +FK command in order to conduct an orderly disconnection.

5.3.6

+FK - Session Termination

Syntax:

+FK

The +FK command causes the DCE to terminate the session in an orderly manner. In particular, the DCE will send a DCN
message at the next opportunity and hang up. At the end of the termination process, the DCE will report the +FHNG response
with result code (Table 5-5).

This operation can be invoked by using the cancel <CAN> character during Phase C data reception (see prior section)

The DCE will wait until the current page completes, unless the reception is of unlimited length; in that case, the DCE may halt
reception and terminate the session at any time.

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