User guide

3GPP TS 27.007 AT CO

MMANDS

AT Commands for EV-DO-EV3 Modems

Syntax

Command Command type

AT+CRC=[<mode>] Set

AT+CRC? Read

AT+CRC=? Test

Parameters and Values

<mode>

0 Disables extended format reporting. Default: 0.

1 Enables extended format reporting:

When enabled, an incoming call is indicated to the TE with unsolicited result code

+CRING: <type>

instead of the normal RING.

where

<type> - call type:

VOICE - normal voice (TS 11)

Notes

 Reference: 3GPP TS 27.007.

Voice Hang Up Control +CVHU

Set command selects whether ATH or "drop DTR" causes a voice connection to be disconnected.

Read command reports the current value of the <mode> parameter, in the format:

+CVHU: <mode>

Test command reports the range of supported values for parameter <mode>.

Syntax

Command Command type

AT+CVHU=[<mode>] Set

AT+CVHU? Read

AT+CVHU=? Test

Parameters and Values

<mode>

0 Drop DTR ignored but OK result code given. ATH disconnects.

1 Drop DTR and ATH ignored but OK result code given. C2 only Default: 1.

2 Drop DTR behavior according to &D setting. ATH disconnects. EV3 only Default: 2.