[asterisk-bugs] [JIRA] (ASTERISK-22829) AMI Atxfer not working with alphanumeric extensions

[Matt Jordan (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-22829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=211553#comment-211553 ] 

Matt Jordan commented on ASTERISK-22829:
----------------------------------------

This is a limitation of the Attended Transfer AMI action. It does not, at this time, support transfers to alphabetic extensions. It is essentially an AMI variant of the existing Attended Transfer DTMF transfer.

This is not a bug, but is a limitation based on the design of the feature. If someone wanted to improve the feature by not using the DTMF attended transfer code as the implementation that'd be great, but that would be an improvement to the overall AMI action.
                
> AMI Atxfer not working with alphanumeric extensions
> ---------------------------------------------------
>
>                 Key: ASTERISK-22829
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22829
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Core/ManagerInterface
>    Affects Versions: SVN, 11.6.0
>         Environment: CentOS 6.4 64bit
>            Reporter: Alberto Rinaudo
>            Severity: Minor
>
> The ami command Atxfer relies on the general atxfer confured in features.conf.
> in manager.c lines 3897/3904 there's the piece where it queues the digits as dtmf in the channel:
> {code:title=manager.c|borderStyle=solid}
> for (feature_code = atxfer_feature->exten; feature_code && *feature_code; ++feature_code) {
> 		struct ast_frame f = { AST_FRAME_DTMF, .subclass.integer = *feature_code };
> 		ast_queue_frame(chan, &f);
> 	}
> 	for (feature_code = (char *)exten; feature_code && *feature_code; ++feature_code) {
> 		struct ast_frame f = { AST_FRAME_DTMF, .subclass.integer = *feature_code };
> 		ast_queue_frame(chan, &f);
> 	}
> {code}
> So when you call
> {code:title=AMI command|borderStyle=solid}
> Action: Atxfer
> Channel: Agent/7001
> Context: atxfer
> Exten: a7002
> Priority: 1
> {code}
> in a telnet console, 'a' is filtered away from Exten resulting in a wrong transfer to '7002' and not 'a7002'.

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