[asterisk-users] asterisk and norstar

[Jorge Mendoza]

Gustavo,

Glad to help.
Gustavo, Linux and Asterisk are tools for implementing a telephony
system, so you must to know telephony basics first. Fortunately Asterisk
will force you to learn telephony!!.

Regarding transfers, see the following scenario. A calls B and B
transfer the call to C.

Blind transfer.- B dial C number and hangup immediately. Doesn't matter
if C answer, if C is busy or if C doesn't answer.

Supervised transfer.- B dial C number and stay in the middle to see if C
answer, is busy or doesn't answer. Then B will take actions depending on
C state.

Regarding topology, yes we have installed auto attendant in many
customers and voicemail, only tested on our old Mitel SX-100 at lab. At
our office we use Asterisk from his early ours!.

Hope this help.

Jorge Mendoza


Gustavo Berman wrote:
> Hello Jorge, and thanks for the answers, but:
>
> I don't understand what is a blind transfer and a supervised transfer.
> I mean, in the topology:
>
> - pstn line -> norstar (ext 123) -> ATA -> (fxo zap/1) asterisk
>
> An incoming call from the pstn line is forwarded by the norstar to
> extension 123 were asterisk is.
> So asterisk answers the call and play a background message for the
> caller.
> But when the user enter the extension number what do we have to do?
> I tried with:
>
> Hook flash version:
> exten => _XXX,1,Flash()  ;do a hook flash (like pressing FUNCTION in
> meridian phone)
> exten => _XXX,2,SendDTMF(*70w${EXTEN},250)  ;sends the code for
> transfer plus the extension
> exten => _XXX,3,Hangup()
> In this version I can transfer the call using the same channel (zap/1)
> but didn't find a way for voicemail if the call is unanswered or is busy.
> Also if its unanswered the call is returned to the extension were
> asterisk is.
>
> Dial version:
> exten => _XXX,1,Dial(ZAP/1/${EXTEN})
> It says the channel is busy.
> I think that with this version I can have a dialstatus for sending to
> voicemail
>
> So, a couple of questions:
> What is a blind and a supervised transfer? (cannot find it in the
> norstar manual)
> Do you have and use this topology?  if so, how do you do it?
>
> Thanks for the help!!!!!!
> (I'm a linux sysadmin and never before worked with telephones system)
>
> -- 
> Gustavo Berman
> Sysadmin
> Depto. Informatica
> Universidad Nacional del Comahue
> Centro Regional Universitario Bariloche
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