Re: [asterisk-users] AA50 Failover

2008-08-01 Thread Drew Gibson
Tzafrir Cohen wrote:
 On Thu, Jul 31, 2008 at 02:10:34PM -0400, Dave Welsh wrote:
   
 If I buy two AA50s can I set them up so that everything runs through the 
 first one, but the second one will take over if the first one goes down? 
I can see the extensions recovering, because they use ethernet, but 
 what about the FSO lines? Is there a way they can be spliced to both 
 AA50s so that no one need to do any emergency rewiring?
 

 Thinking aloud:

 what happens if you just connect th two units on the same phone line?

   

Use one of those fax/modem/phone sharing boxes that blocks the other 
devices when one is off hook.

 You basically need a way to prevent the slave unit from answering calls
 if the master is alive.

   

Set the primary unit to pick up on, say, 2 rings and the secondary unit 
to pick up on 4.
If the primary fails, it won't pick up the line and the secondary takes 
over.

You could try having your phones register to both but I'm not sure how 
that would work

regards,

Drew

-- 
Drew Gibson

Systems Administrator
OANDA Corporation
www.oanda.com


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Re: [asterisk-users] AA50 Failover

2008-08-01 Thread Grygoriy Dobrovolskyy
People hate to wait, as a fact i consider AA50s no suited for redundancy,
and i am not sure that they were made for that.

2008/8/1 Drew Gibson [EMAIL PROTECTED]

 Tzafrir Cohen wrote:
  On Thu, Jul 31, 2008 at 02:10:34PM -0400, Dave Welsh wrote:
 
  If I buy two AA50s can I set them up so that everything runs through the
  first one, but the second one will take over if the first one goes down?
 I can see the extensions recovering, because they use ethernet, but
  what about the FSO lines? Is there a way they can be spliced to both
  AA50s so that no one need to do any emergency rewiring?
 
 
  Thinking aloud:
 
  what happens if you just connect th two units on the same phone line?
 
 

 Use one of those fax/modem/phone sharing boxes that blocks the other
 devices when one is off hook.

  You basically need a way to prevent the slave unit from answering calls
  if the master is alive.
 
 

 Set the primary unit to pick up on, say, 2 rings and the secondary unit
 to pick up on 4.
 If the primary fails, it won't pick up the line and the secondary takes
 over.

 You could try having your phones register to both but I'm not sure how
 that would work

 regards,

 Drew

 --
 Drew Gibson

 Systems Administrator
 OANDA Corporation
 www.oanda.com


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Re: [asterisk-users] AA50 Failover

2008-08-01 Thread Brent Torrenga
Set the primary unit to pick up on, say, 2 rings and the secondary unit 
to pick up on 4.
If the primary fails, it won't pick up the line and the secondary takes 
over.

You could try having your phones register to both but I'm not sure how 
that would work

regards,

Drew

That's exactly how I have things setup.  Phones register to both servers.
The backup server doesn't do much - only answers incoming calls if the ring
goes on for too long.  Keep in mind that you may want to configure the
backup server to not use the lines for placing outbound calls - maybe setup
a SIP trunk for that.  Otherwise, when the primary server comes back up, the
two will be talking over each other trying to use the same lines.

--Brent


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Re: [asterisk-users] AA50 Failover

2008-08-01 Thread Michael Graves
On Fri, 1 Aug 2008 09:20:07 -0500, Brent Torrenga wrote:

Set the primary unit to pick up on, say, 2 rings and the secondary unit 
to pick up on 4.
If the primary fails, it won't pick up the line and the secondary takes 
over.

You could try having your phones register to both but I'm not sure how 
that would work

regards,

Drew

That's exactly how I have things setup.  Phones register to both servers.
The backup server doesn't do much - only answers incoming calls if the ring
goes on for too long.  Keep in mind that you may want to configure the
backup server to not use the lines for placing outbound calls - maybe setup
a SIP trunk for that.  Otherwise, when the primary server comes back up, the
two will be talking over each other trying to use the same lines.

Polycom phones support primary and secondary servers. 

Michael
--
Michael Graves
mgravesatmstvp.com
http://blog.mgraves.org
o713-861-4005
c713-201-1262
sip:[EMAIL PROTECTED]
skype mjgraves
[EMAIL PROTECTED]



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Re: [asterisk-users] AA50 Failover

2008-08-01 Thread Drew Gibson
Brent Torrenga wrote:
 Set the primary unit to pick up on, say, 2 rings and the secondary unit 
 to pick up on 4.
 If the primary fails, it won't pick up the line and the secondary takes 
 over.

 You could try having your phones register to both but I'm not sure how 
 that would work

 regards,

 Drew
 

 That's exactly how I have things setup.  Phones register to both servers.
 The backup server doesn't do much - only answers incoming calls if the ring
 goes on for too long.  Keep in mind that you may want to configure the
 backup server to not use the lines for placing outbound calls - maybe setup
 a SIP trunk for that.  Otherwise, when the primary server comes back up, the
 two will be talking over each other trying to use the same lines.

 --Brent
   

That's where the fax/modem sharing box comes in, if one device port has 
the line, all other device ports are blocked. Downside is that this will 
also cause dead air on an outbound call or two until things settle down 
again.

regards,

Drew

-- 
Drew Gibson

Systems Administrator
OANDA Corporation
www.oanda.com


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[asterisk-users] AA50 Failover

2008-07-31 Thread Dave Welsh
If I buy two AA50s can I set them up so that everything runs through the 
first one, but the second one will take over if the first one goes down? 
   I can see the extensions recovering, because they use ethernet, but 
what about the FSO lines? Is there a way they can be spliced to both 
AA50s so that no one need to do any emergency rewiring?

-- 
Dave Welsh
Quality of Course
(613) 749-8248

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Re: [asterisk-users] AA50 Failover

2008-07-31 Thread Grygoriy Dobrovolskyy
There is 2 possibilities to do failover with asterisk:
First use openser with failover, but still you need to switch cables fxo fxs
 pri bri

Second is simplier and i would choose this one for smallmedium
installations where T1/E1 is not needed:
It consists of externaising of all fxs fxo pri  bri wih sip gateways, and
installation 2 servers with heartbeat, you dont need openser in this case,
also think of registration time reducing, it helps to swich fast. So why not
T1/E1 ? it is possible no problem, but price...3K$ for audiocodes. Of course
this is relative, and choice is yours.

2008/7/31 Dave Welsh [EMAIL PROTECTED]

 If I buy two AA50s can I set them up so that everything runs through the
 first one, but the second one will take over if the first one goes down?
   I can see the extensions recovering, because they use ethernet, but
 what about the FSO lines? Is there a way they can be spliced to both
 AA50s so that no one need to do any emergency rewiring?

 --
 Dave Welsh
 Quality of Course
 (613) 749-8248

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Re: [asterisk-users] AA50 Failover

2008-07-31 Thread Tzafrir Cohen
On Thu, Jul 31, 2008 at 02:10:34PM -0400, Dave Welsh wrote:
 If I buy two AA50s can I set them up so that everything runs through the 
 first one, but the second one will take over if the first one goes down? 
I can see the extensions recovering, because they use ethernet, but 
 what about the FSO lines? Is there a way they can be spliced to both 
 AA50s so that no one need to do any emergency rewiring?

Thinking aloud:

what happens if you just connect th two units on the same phone line?

You basically need a way to prevent the slave unit from answering calls
if the master is alive.

The same should work with BRI PtMP, right?

(But both are not used. And in the case of BRI, dedicated hardware is
used instead. So I guess that there must be a good reason for that)

-- 
   Tzafrir Cohen
icq#16849755  jabber:[EMAIL PROTECTED]
+972-50-7952406   mailto:[EMAIL PROTECTED]
http://www.xorcom.com  iax:[EMAIL PROTECTED]/tzafrir

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Re: [asterisk-users] AA50 Failover

2008-07-31 Thread Dave
 From my research, it seems that for FXOs you can use a siple RJ11  
splitter. A special splitter that gives priority to the backup split  
is preferred. These will sometimes be used for old answering machines  
where the handset can overuse the answering machine if it's picked up.

For the server end I was considering heartbeat plus dbrm. I might have  
to build my own box for that since I've seen it recommended you  
connect the two boxes by serial port as well as Ethernet.

---
Sent from my iPhone

On 31-Jul-08, at 4:57 PM, Tzafrir Cohen [EMAIL PROTECTED]  
wrote:

 On Thu, Jul 31, 2008 at 02:10:34PM -0400, Dave Welsh wrote:
 If I buy two AA50s can I set them up so that everything runs  
 through the
 first one, but the second one will take over if the first one goes  
 down?
   I can see the extensions recovering, because they use ethernet, but
 what about the FSO lines? Is there a way they can be spliced to both
 AA50s so that no one need to do any emergency rewiring?

 Thinking aloud:

 what happens if you just connect th two units on the same phone line?

 You basically need a way to prevent the slave unit from answering  
 calls
 if the master is alive.

 The same should work with BRI PtMP, right?

 (But both are not used. And in the case of BRI, dedicated hardware is
 used instead. So I guess that there must be a good reason for that)

 -- 
   Tzafrir Cohen
 icq#16849755  jabber:[EMAIL PROTECTED]
 +972-50-7952406   mailto:[EMAIL PROTECTED]
 http://www.xorcom.com  iax:[EMAIL PROTECTED]/tzafrir

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