[asterisk-users] Sending Calls via SIP trunk from several different IP addresses from same Asterisk Machine, to the same destination IP

Neeraj Chand nrjchnd at gmail.com
Wed May 25 17:02:11 CDT 2016


And if we were the trunk provider in this case - I would probably trunk it to a separate machine, or run a second instance of asterisk on the same machine and bind it to the secondary IP address / sip port combo, peer the two instances and then send it out via the second instance. 



Sent from my iPhone

> On 26 May 2016, at 7:46 AM, Glenn Geller (VDOPh) <ggeller at vdo-ph.com> wrote:
> 
> Hi,
> 
> Usually, the trunk provider(s) provide a mechanism to support this, and it's the "Tech Prefix" or just "Prefix".
> 
> So, for Tenant 1, send 12348005551212 and for Tenant 2, send 56788005551212.
> 
> They'll then strip the prefix, and send along to 8005551212
> 
> Most trunk providers worth anything will support this type of termination.
> 
> Hope this helps,
> 
> Glenn @ VDO
> 
>> On Wed, May 25, 2016 at 2:13 PM, Attila Megyeri <amegyeri at minerva-soft.com> wrote:
>> Hi!
>> 
>>  
>> 
>> I would like to reopen a discussion that I saw a couple of years ago, with the subject  “Sending Calls via SIP trunk from two different IP addresses from same Asterisk Machine”
>> 
>>  
>> 
>> The use case is simpe: There are providers that want to see a separate source IP address for each of their customers SIP trunks. Now, if we have an asterisk box with several customers, we have a problem.
>> 
>>  
>> 
>> Does anyone have experience in this topic? How could we send outgoing calls (to the same destination IP) from different source IPs depending on the caller ID (Based on From: field, sip account, preferred-identity, whatever).
>> 
>>  
>> 
>> I was thinking about some Kamailio, or SBC that would take the calls from asterisk using a user/pass authentication on a single interface, and initiate calls from a dedicated IP address for each customer.
>> 
>> Any better idea?
>> 
>>  
>> 
>> Thanks
>> 
>>  
>> 
>> 
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