[A*UG] PRI and line sharing

[Mark Barry]

Brett,
Maybe Jim can elaborate on the original question, however I took it to mean
that he is using a digital PRI circuit from one of the local carriers. In
this case the reinvite would not apply anyway.
I do concur with you that bandwidth and traffic shaping need to be taken
into consideration for this type of setup.
Sharing a PRI circuit in this way is quite common.
Mark

On Wed, Jul 29, 2009 at 9:18 AM, Brett Nemeroff <brett-aaug at nemeroff.com>wrote:

> Actually, the issue still remains even if there is only one server, unless
> you are using canreinvite which honestly I wouldn't recommend given the
> possibility of station to station routing between public and private IP
> address phones.
>
> So PRI goes to Server A, then RTP leaves Server A to Site B. You still use
> bandwidth at both sites for each call.
>
> -Brett
>
> On Wed, Jul 29, 2009 at 1:07 AM, Benjamin Hudgens <bhudgens at photodex.com>wrote:
>
>> Hey Jim --
>>
>> I got the impression it was the same system serving both offices? Ie, one
>> server managing one PRI, feeding both locations?
>>
>> Quite possibly I missed something...?
>>
>> Cheers,
>> Benjamin
>>
>> ------------------------------
>>  *From*: austin-asterisk-users-group-bounces at bybent.com
>> *To*: Jim Freeze
>> *Cc*: austin-asterisk-users-group at bybent.com
>> *Sent*: Tue Jul 28 23:42:57 2009
>> *Subject*: Re: [A*UG] PRI and line sharing
>>
>> Jim,In general, any resource can be shared between servers. However you
>> need to consider the impact it will have on the bandwidth.
>>
>> So if server A has the PRI, but server B has the phones, the calls go from
>> the provider INTO Server A, then OUT of Server A (doubling the bandwidth
>> usage at that site) then INTO Server B.
>>
>> It's done for inbound calls much in the same way you do it for outbound
>> calls. For inbound calls you simply dial the other server (so you'll need a
>> sip/iax connection between the two servers)
>>
>> With more modern systems, you don't normally have to worry about hunt
>> groups and such. Unless of course you actually have analog hunt groups. If
>> you do, the same applies, but you need some way to identify which inbound
>> call is for which server. For analog lines, this is usually either done by
>> an IVR prompting the user like "Push 1 for sales, push 2 for support" where
>> sales could be local, but support may be Server B. Or you have to create
>> separate hunt groups for each Server.
>>
>> I'm not sure if that helps or confuses things. ;)
>> -Brett
>>
>> On Tue, Jul 28, 2009 at 9:40 PM, Jim Freeze <asterisk at freeze.org> wrote:
>>
>>> I am installing a channel 12 (11 digital phone lines) using a PRI and
>>> I have a few questions about hunt groups and line pooling.
>>> The system is serving two offices, each with their own DiD.
>>>
>>> I'm wondering if there is a way to pool the lines between the offices,
>>> so that both offices can use any available line. I know this can be
>>> done for outgoing calls, but the real question is can it be done for
>>> incoming calls. I assume that each DiD will need a hunt group, but
>>> defining a hunt group seems to exclude the possibility of pooling the
>>> lines for incoming calls.
>>>
>>> Does anyone know if this is possible?
>>>
>>> --
>>> Jim Freeze
>>> _______________________________________________
>>> Austin-Asterisk-Users-Group mailing list
>>> Austin-Asterisk-Users-Group at bybent.com
>>> http://bybent.com/mailman/listinfo/austin-asterisk-users-group
>>> AAUG Web Site: http://aaug.bybent.com/
>>>
>>
>>
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>>
>>
>
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>


-- 
Mark Barry
Exabar Phone Systems
512-258-2175
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