Comtrol AT Commands for SmartACFL User Manual

Page 64

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Command Reference Manual

3-44

Conexant

100722A

3.2.5.5 +ER - Error Control Reporting
This extended-format numeric parameter controls whether or not the extended-format +ER: intermediate result code is
transmitted from the modem to the DTE.

S95 bit 3 is reset to 0 for +ER=0 and is set to a 1 for +ER=1. The more recent setting of +ER or S95 bit 3, and the W
command setting, determines the actual error control result code reporting (see S95 Parameter and W Command).

+ER=[<value>]

Syntax

+ER=[<value>]

Defined Values

<value>

A decimal number corresponding to the selected error control option:

0 =

Error control reporting disabled (no +ER intermediate result code transmitted).
(Default.)

1 =

Error control reporting enabled (+ER intermediate result code transmitted).

Reporting Current or Selected Values
Command: +ER?
Response:

+ER: <current value>

Example:

+ER: 0

for the default setting

Reporting Supported Range of Parameter Values
Command: +ER=?
Response:

+ER: (<value> range)

Example:

+ER: (0,1)

+ER: <type>
The +ER: <type> reported represents the current (negotiated or renegotiated) modem-modem error control type. If enabled,
the intermediate result code is transmitted at the point during error control negotiation (handshaking) at which the modem has
determined which error control protocol will be used (if any), before the final result code (e.g., CONNECT) is transmitted. The
format of this result code is:

The +ER intermediate result code, if enabled, is issued after the Modulation report (+MCR and +MRR) and before the Data
Compression Report (+DR).

Syntax

+ER: <type>

Defined Values

<type>

An alphanumeric code corresponding to the selected protocol.

NONE

Error control is not in use.

LAPM

V.42 LAPM protocol is in use.

ALT

MNP is in use.

Example

+ER: LAPM

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