[asterisk-users] Explicit Call Transfer(ECT)

babak bk1379 at yahoo.com
Mon Jun 16 04:05:23 CDT 2014 

Hi
I have done everything richard told to enable ECT .
below is my trace, anyone can help ?
    -- DAHDI/i1/09123278669-4 answered DAHDI/i1/88050048-3
    -- Native bridging DAHDI/i1/88050048-3 and DAHDI/i1/09123278669-4
PRI Span: 1 Adding facility ie contents to send in FACILITY message:
PRI Span: 1 ASN.1 dump
PRI Span: 1   Context Specific/C [1 0x01] <A1> Len:11 <0B>
PRI Span: 1     Integer(2 0x02) <02> Len:1 <01>
PRI Span: 1       <04> - "~"
PRI Span: 1     OID(6 0x06) <06> Len:6 <06>
PRI Span: 1       <04 00 82 71 01 04> - "~~~q~~"
PRI Span: 1 ASN.1 end
PRI Span: 1 INVOKE Component Context Specific/C [1 0x01]
PRI Span: 1   invokeId Integer(2 0x02) = 4 0x0004
PRI Span: 1   operationValue OID(6 0x06) = 4.0.369.1.4
PRI Span: 1   operationValue = ROSE_ETSI_EctLinkIdRequest
PRI Span: 1
PRI Span: 1 > DL-DATA request
PRI Span: 1 > Protocol Discriminator: Q.931 (8)  len=21
PRI Span: 1 > TEI=0 Call Ref: len= 2 (reference 3/0x3) (Sent from originator)
PRI Span: 1 > Message Type: FACILITY (98)
PRI Span: 1 TEI=0 Transmitting N(S)=14, window is open V(A)=12 K=7
PRI Span: 1
PRI Span: 1 > Protocol Discriminator: Q.931 (8)  len=21
PRI Span: 1 > TEI=0 Call Ref: len= 2 (reference 3/0x3) (Sent from originator)
PRI Span: 1 > Message Type: FACILITY (98)
PRI Span: 1 > [1c 0e 91 a1 0b 02 01 04 06 06 04 00 82 71 01 04]
PRI Span: 1 > Facility (len=16, codeset=0) [ 0x91, 0xA1, 0x0B, 0x02, 0x01, 0x04, 0x06, 0x06, 0x04, 0x00, 0x82, 'q', 0x01, 0x04 ]
PRI Span: 1
PRI Span: 1 < Protocol Discriminator: Q.931 (8)  len=16
PRI Span: 1 < TEI=0 Call Ref: len= 2 (reference 3/0x3) (Sent to originator)
PRI Span: 1 < Message Type: FACILITY (98)
PRI Span: 1 < [1c 09 91 a3 06 02 01 03 02 01 07]
PRI Span: 1 < Facility (len=11, codeset=0) [ 0x91, 0xA3, 0x06, 0x02, 0x01, 0x03, 0x02, 0x01, 0x07 ]
PRI Span: 1 Received message for call 0xa9519f8 on link 0xa83ef9c TEI/SAPI 0/0
PRI Span: 1 -- Processing IE 28 (cs0, Facility)
PRI Span: 1 -- Delayed processing IE 28 (cs0, Facility)
PRI Span: 1 ASN.1 dump
PRI Span: 1   Context Specific/C [3 0x03] <A3> Len:6 <06>
PRI Span: 1     Integer(2 0x02) <02> Len:1 <01>
PRI Span: 1       <03> - "~"
PRI Span: 1     Integer(2 0x02) <02> Len:1 <01>
PRI Span: 1       <07> - "~"
PRI Span: 1 ASN.1 end
PRI Span: 1 ERROR Component Context Specific/C [3 0x03]
PRI Span: 1   invokeId Integer(2 0x02) = 3 0x0003
PRI Span: 1   errorValue Integer(2 0x02) = 7 0x0007
PRI Span: 1   errorValue = General: Invalid Call State
PRI Span: 1 ROSE RETURN ERROR:
PRI Span: 1     INVOKE ID: 3
PRI Span: 1     ERROR: General: Invalid Call State
PRI Span: 1
PRI Span: 1 < Protocol Discriminator: Q.931 (8)  len=16
PRI Span: 1 < TEI=0 Call Ref: len= 2 (reference 3/0x3) (Sent to originator)
PRI Span: 1 < Message Type: FACILITY (98)
PRI Span: 1 < [1c 09 91 a3 06 02 01 04 02 01 07]
PRI Span: 1 < Facility (len=11, codeset=0) [ 0x91, 0xA3, 0x06, 0x02, 0x01, 0x04, 0x02, 0x01, 0x07 ]
PRI Span: 1 Received message for call 0xa9519f8 on link 0xa83ef9c TEI/SAPI 0/0
PRI Span: 1 -- Processing IE 28 (cs0, Facility)
PRI Span: 1 -- Delayed processing IE 28 (cs0, Facility)
PRI Span: 1 ASN.1 dump
PRI Span: 1   Context Specific/C [3 0x03] <A3> Len:6 <06>
PRI Span: 1     Integer(2 0x02) <02> Len:1 <01>
PRI Span: 1       <04> - "~"
PRI Span: 1     Integer(2 0x02) <02> Len:1 <01>
PRI Span: 1       <07> - "~"
PRI Span: 1 ASN.1 end
PRI Span: 1 ERROR Component Context Specific/C [3 0x03]
PRI Span: 1   invokeId Integer(2 0x02) = 4 0x0004
PRI Span: 1   errorValue Integer(2 0x02) = 7 0x0007
PRI Span: 1   errorValue = General: Invalid Call State
PRI Span: 1 ROSE RETURN ERROR:
PRI Span: 1     INVOKE ID: 4
PRI Span: 1     ERROR: General: Invalid Call State
PRI Span: 1
PRI Span: 1 < Protocol Discriminator: Q.931 (8)  len=13
PRI Span: 1 < TEI=0 Call Ref: len= 2 (reference 4/0x4) (Sent to originator)
PRI Span: 1 < Message Type: DISCONNECT (69)
PRI Span: 1 < [08 02 80 90]
PRI Span: 1 < Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)  Spare: 0  Location: User (0)
PRI Span: 1 <                  Ext: 1  Cause: Normal Clearing (16), class = Normal Event (1) ]
PRI Span: 1 < [1e 02 82 88]
PRI Span: 1 < Progress Indicator (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)  0: 0  Location: Public network serving the local user (2)
PRI Span: 1 <                               Ext: 1  Progress Description: Inband information or appropriate pattern now available. (8) ]
PRI Span: 1 Received message for call 0xa9760b8 on link 0xa83ef9c TEI/SAPI 0/0
PRI

Regards
Maani

> This is best asked on the asterisk-users mailing list for the benefit of
> other people and for list archive searches.

> You haven't mentioned which Asterisk/libpri versions are involved so the
> functionality may not be available.  Only ETSI(EuroISDN) and Q.SIG really
> support what you are talking about on currently supported Asterisk and libpri
> versions.  Several North American switch types blindly just send a request
> message to do this but I don't know if it actually works.

> However, there are several reasons why it may not work:

> 1) Asterisk must be configured to do it.  The channels in the ISDN span must
> have transfer=yes, facilityenable=yes, and switchtype=euroisdn or qsig
> configured in the chan_dahdi.conf file.

> 2) Asterisk must not have any reason to remain in the middle.  i.e., The call
> must be over the same ISDN span with no local channels in the path, no DTMF
> features enabled on the call (Dial tT type options), and no audio-hooks or
> frame-hooks attached for things like call recording.

> 3) The peer must be provisioned to allow the feature.

> 4) The peer may not accept the transfer request at the time for other reasons.

> You can set "pri set debug on span x" and see if the transfer is attempted on
> a test call by looking for FACILITY messages that attempt to transfer the call.

> Richard


>> Hi Richard
>> I am worknig in a Telecom operator.
>> I enabled ECT service on one E1 PRI link connected to Asterisk.
>> I enabled Transfer and facility message and have one E100 on my Asterisk.
>> I called from PSTN to my asterisk and tried to transfer the call again to PSTN
>> 1-with followme feature of Elastix and 2- hold and transfer feature of softphones.
>> with softphones even transfered call are connected but when I hangup softphone ,
>> connected call also disconnect.
>> please tell me you opinion.in ECT is it possible to call 
>>from PSTN to Asterisk and then transfer from  Asterisk to PSTN

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