[Asterisk-Users] Collect calls

[Rodrigo P. Telles]

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James,

jltaylor escreveu:
| Since you are referring to R2 signaling, it works like this:

I'm referring to ISDN PRI channels not R2.

|
| The E1 R2 Call Blocking feature provides two ways to block incoming collect
| calls-category-based and double answer. With category-based call blocking,
| collect calls will be blocked based on a specific category. For example, in
| Brazil, collect calls arrive with a category II-8, for which the gateway
| should send B-7 as a response instead of an answer signal. This approach is
| only applicable when switches in the central office support category-based
| blocking.
|
| For legacy switches that do not support category-based blocking, the double
| answer method is implemented to support the collect-call blocking. For an
| incoming collect call, the gateway will answer the call with a clearback
| after one second and re-answer the call after two seconds, causing the
| collect call to be dropped and normal calls to stay connected.

Can you give me an example using this method with Asterisk?

|
| This is what the referenced patches are attempting to do.

Referenced Patches? What do you mean?
Does someone is working with patches to implement this feature in Asterisk?

|
| This does not work in the U.S. or if you have SS7, you don't need it.

Thanks for your answer.

|
| James
|
| -----Original Message-----
| From: asterisk-users-bounces at lists.digium.com
| [mailto:asterisk-users-bounces at lists.digium.com]On Behalf Of Michael D
| Schelin
| Sent: Tuesday, May 03, 2005 6:06 PM
| To: Asterisk Users Mailing List - Non-Commercial Discussion
| Subject: Re: [Asterisk-Users] Collect calls
|
|
| You Bring up a great point. I understand these codes and my system
| brings them in via ss7 but as youself I don't know how to protect my
| network from these charges. I will follow this post to see if anybody
| has a fix.
|
|
| Rodrigo P. Telles wrote:
|
|
| Hi Folks,
|
| Does someone knows how to identify and block collect calls on Asterisk
| using PRI
| channels?
| I googled it and found this:
| http://lists.digium.com/pipermail/asterisk-dev/2004-November/007500.html
| I don't know what does it mean!!!
| Can someone help me to understand this?
|
| I tried to apply that way too, using Flash() but Flash() complains and
| looks
| like just work with FXO channels:
| http://lists.digium.com/pipermail/asterisk-users/2004-October/066360.html
|
| Thanks in advance.
|
| --
| ============================================
| Rodrigo P. Telles <telles at devel.it>
| IVOZ # 1009
| TI Manager
| Devel-IT - http://www.devel.it
| Bestcom Group
| ============================================
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- --
============================================
Rodrigo P. Telles <telles at devel.it>
IVOZ # 1009
TI Manager
Devel-IT - http://www.devel.it
Bestcom Group
============================================
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