sim300С:вместо сигнала BUSY выдает ERROR Опции

[yaras]

Народ, подскажите, плиз.
До этого работал с Сименсами, проблем не было. Пытаюсь замест них поставить СИМКОМ, почти все срослось, только проблема - не выставляется сигнал BUSY- при занятой линии, выдается ERROR. То есть: при AT+COLP=0, ОК выставляется сразу после набора номера, затем во всех случаях (абонент отсутствует, занят или после разрыва соединения по его иницииативе - NO CARRIER, как бы правильно, но мне не подходит, тк нет различий)
при AT+COLP=1, ОК - после соединения, после разрыва - NO CARRIER, тоже правильно, но при занятом или отсутсвующем абоненте вместо BUSY/NO CARRIER пишет ERROR. ATX4. Мож какой параметр не выставлен? Мануал вроде бы просмотрел.

[CADiLO]

Изменения сделаные в 12 версии

Добавлено

1. Add AT command AT+HVOIC used to only hang up voice calls when voice and gprs calls are active at one time.
2. Add the high voltage automatically power down.

Исправлено

1 Modify the function of AT+CGDATA command according to the spec, make module can enter into data mode when PDP is not active, otherwise return OK directly.
2 Fix the bug that setting call waiting, and another call is coming, then he hang up, module will not sent ”NO CARRIER”.
3 Fix the bug that dialing, AT+CPAS return status error.
4 Fix the bug that CSD data MO hang up, and call incoming, AT+CLCC display audio call error.
5 Fix the bug that after setting ATV0, call incoming display RING, no accept call display NO CARRIER, and ATD*99# switch to AT status display OK.
6 Modify the audio parameters; reduce the change step in volume adjustment.
7 The max length of TCP send data length change to 1460.
8 Resolve the problem of the place that rapid traverse recorded messages by +CMGR and Reading messages by +CMGL is not accord.
9 The output information of low power down and high power down change to
UNDER-VOLTAGE WARNNING，OVER-VOLTAGE WARNNING，
UNDER-VOLTAGE POWER DOWN ， OVER-VOLTAGE POWER DOWN respectively.
10 When query the status of ”PF” used command AT+CLCK, change return result from SIM PIN to PH-FSIM PIN.
11 Modified the input style of the parameter port for ”AT+CIPSTART” and ”AT+CLPORT” to support the style with quotes and the style without quotes.
12 Revise a bug that the serial port can’t work after a original call is hang up by the other side when the DTMF tone is not stop.
13 Revise a bug that there isn’t an indication of the state of SIM card after the module start up for some SIM cards。
14 Revise a bug that it is failed to read or write SMS when the SIM card is rejected by network.
15 Revise a bug that the short message which comes when the sim storage is full may be not received after process ”AT+CNMI=2,2,0,1,0” again.
16 Fix the bug: In calling process, if execute volume change act frequently, the module will reset.
17 Fix the bug that it will return ”ERROR” when dial a number with name saved in the phonebook ”ON” if the phone is set as ”SM” or ”ME”.
18 Fix the bug that first set at+cfun=0, then set at+cfun=4, the module can make a call.
19 Modify the response of the command ”AT+CPBW”. If the memory is full, it will respond with ”+CME ERROR: 20” or ”+CME ERROR: memoryfull”.
And if the input index is overflow, it will respond with ”+CME ERROR: 21” or ”+CME ERROR: invalid index”
20 Upgrade the gpn.lib and gpd.lib, fix the problem that some SIM card can not be recognized.
21 Fix the bug that AT+SCLASS0 can not be reset to factory setting.
22 Support both spansion 32M flash and spansion 32M mirror bit flash
23 Fix a bug that it is failed to write SN.
24 Fix a bug about AT+CHLD=2X command.