[asterisk-users] Voicemail personalised greetings using DB/IMAP backend?

[Paul]

Very interesting! I have xen running on 4 hosts so far. One is a p4 and
the other 3 are pentium D. Next build will probably be a dual-dual xeon.
I have a few test VM's running asterisk with perl AGI doing cepstral
TTS. I first did this about a year ago as a way of exploring the limits
of virtualization.

How would you compare asterisk to openser for the master SIP router
role? I am about to setup openser on a VM for evaluation purposes.

Bryan M. Johns wrote:

> We are in a project right now where we have build a single asterisk
> switch acting as a master SIP router and delivering service to and
> from about 30 xen-based VMs.  It is a multi-tenant build.  I am not
> certain if this is your particular scenario or if I am off-base.
>
> A word of caution, though.  Do not run SIP routing functions on Dom0
> in a Xen environment and do not use Asterisk 1.4 for these functions
> yet.  In testing, we encountered routine segmentation faults on both
> our Dom0 and our 30 DomUs.  We fixed this issue by separating the core
> SIP routing functions to a stand-alone server and by downgrading all
> DomUs to Asterisk 1.2.14.
>
> Our entire architecture is Fedora 6, by the way.  DomU is 32bit and
> all DomUs are run on a single, large 64bit server platform.
>
> I hope this is helpful.
>
> Bryan M. Johns
> Partner
> *Shelton | Johns Technology Group*
> office: 678:248:2637 x:1500
> direct: 678:229:1809
> mobile: 404.259.9216
> iaxtel: 700:248:2637 x:1500
> *http://www.sheltonjohns.com* <http://www.sheltonjohns.com/>
>
>
> On Jan 5, 2007, at 7:00 PM, Ray Jackson wrote:
>
>> Hi Bryan,
>>
>> I was trying to avoid creating an architecture dedicated to VM, but
>> have Asterisk handle VM in a horizontally scalable way.  I understand
>> there are some issues with MWI etc. if you separate out the VM from
>> Asterisk?  Could you point me at any good examples of a VM
>> architecture I could use as a reference?
>>
>> Cheers,
>> Ray
>>
>> Bryan M. Johns wrote:
>>
>>> Ray,
>>> Have you considered using a VM architecture?
>>> Bryan M. Johns
>>> Partner
>>> *Shelton | Johns Technology Group*
>>> office: 678:248:2637 x:1500
>>> direct: 678:229:1809
>>> mobile: 404.259.9216
>>> iaxtel: 700:248:2637 x:1500
>>> *http://www.sheltonjohns.com* <http://www.sheltonjohns.com/>
>>> On Jan 5, 2007, at 5:17 PM, Ray Jackson wrote:
>>>
>>>> Hi all,
>>>>
>>>> I am attempting to build a horizontally scalable Asterisk
>>>> deployment and am getting very close to achieving that goal.  With
>>>> Asterisk 1.4 I now have an IMAP backend for Voicemail messages
>>>> which is great as users can check the same messages either through
>>>> the voice portal or using Webmail.  However, I'm not sure the best
>>>> way of dealing with personalised greetings such as a user's
>>>> unavailable/busy message etc. Despite the IMAP backend these
>>>> greetings appear to be stored on the local file system under
>>>> /var/spool/asterisk/voicemail/default, which means if I build a
>>>> farm of Asterisk servers - each will have it's own spool
>>>> directory.  My aim is to have *nothing* stored locally at all...
>>>>
>>>> If there a way of storing these greetings in a database table or
>>>> using IMAP?  I saw the ODBC voicemail storage module, but I would
>>>> prefer to stick with a REALTIME/IMAP backend?  If I mount the
>>>> /var/spool/asterisk/voicemail directory remotely using a shared NFS
>>>> mount on a NAS device will this work okay or lead to problems/race
>>>> conditions etc.?  Any advice would be welcome!
>>>>
>>>> Regards,
>>>> Ray
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