> 3.4 | AT+CEER Extended Error Report

> AT+CEER returns an extended error report regarding the reason of the last

> • | call release

> • | failure to set up a call (both mobile originated or terminated)

> • | failure to modify a call by using Supplementary Services

> • | failed attempt to activate, register, query, deactivate or deregister a Supplementary Service

> • | unsuccessful GPRS attach or unsuccessful PDP context activation

> • | GPRS detach or PDP context deactivation

> The release cause report is presented in numeric format. Default output in case of a none-error-situation is +CEER: 0,0,0. A description associated with each number can be found in the tables given in the following subclauses and the relevant GSM specifications.
> The first parameter <locationID> serves to locate the other two parameters. Depending on the failure or release cause either <reason> or <ssRelease> are applicable, i.e. if <reason> ≠ 0, then <ssRelease> = 0. Vice versa, if <reason> = 0, then <ssRelease> may be ≠ 0.
> In addition to AT+CEER, the command ATS18 can be used to check especially the status of fax and data calls.
> Syntax

> Test Command AT+CEER=?
> Response(s)
> OK
> ERROR
> +CME ERROR

> Exec Command AT+CEER
> Response(s)
> +CEER: <locationID>, <reason>, <ssRelease>
> OK
> ERROR
> +CME ERROR

> Reference(s) |  | PIN |  | ASC0 | ASC1 | USB | MUX1 | MUX2 | MUX3 |  |  | Charge | Q | Last
> GSM 07.07 |  | + |  | + | + | + | + | + | + |  |  | - | + | -

> Parameter Description

> <locationID>(num)

> Location ID as number code. Location IDs are listed in Section 3.4.1, Cause Location ID for the extended error report. Each ID is related with another table that contains a list of <reason>s or <ssRelease>s.

> <reason>(num)

> Reason for last call release as number code. The number codes are listed in several tables, sorted by different categories in the following subclauses. The tables can be found proceeding from the Location ID given in Section 3.4.1, Cause Location ID for the extended error report.

> <ssRelease>(num)

> Release cause for last Supplementary Service call (listed in Section 3.4.9, GSM Release cause for Supplementary Service Call)
> Examples

> EXAMPLE 1 |

> ATD"01751223344"; | A mobile originated call is rejected by the remote party.
> NO CARRIER | Call setup is terminated with NO CARRIER.
> AT+CEER | To check the cause, the caller enters AT+CEER.
> +CEER: 8,21,0 | The Location ID 8 in Section 3.4.1 points to Section 3.4.7, where 21 = "Call rejected". 0 = "No error" refers to parameter <ssRelease> that is not applicable.
> OK

> EXAMPLE 2 | The user attempts to activate call barring, but uses a wrong password.

> AT+clck=oi,1,"0000",3
> +CME ERROR: incorrect password
> AT+CEER
> +CEER: 35,0,38 | The Location ID 35 in Section 3.4.1 points to Section 3.4.9, where 38 = "NegativePWCheck" may mean that a wrong password was tried for the first time. 0 = "No error" refers to parameter <reason> that is not applicable.
> OK