[Freeswitch-users] Howto? Migrating from Siemens HiPath4000 to FreeSWITCH

Chris Mylonas chris at opencsta.org
Thu May 10 11:40:41 MSD 2012

Hi List,

The only thing against an external device is that they can become EOL - i.e. SIP stack does not get further updates.  Take a Linksys SPA400 for example (4 port FXO).  This has now been superseeded by a Cisco 8800 (4xFXO + 4xFXS)
An internal card may get longer software updates.
Network security for the external device nearly makes this a null point.

If the server that has the card dies, then it's a PITA to move the card to the back up box.  Unless you have the backup box with an ISDN card as well.  There are devices that do automatic switching on failure (I believe Xorcom had one that runs off USB).

That's something that is often overlooked.
I would go the external device because of convenience - and if the EOL thing is a problem, buy another one in 5 years or whenever.

My 2 cents,

On 10/05/2012, at 5:26 PM, Markus Lindenberg wrote:

> Hi,
> On Thu, May 10, 2012 at 9:10 AM, Karsten Horsmann <khorsmann at gmail.com> wrote:
>> Btw. you can also buy an A102d with two PRI Ports. The "d" stands for
>> echo-chancelation.
>> Or you get an Mediagateway like the Patton Inalp SmartNode 4960.
> I would also recommend to use a SmartNode or PRI board with two ports.
> This way you can sync the internal (HiPath facing) port to the
> external (Telekom) port, which will help avoid all kinds of timing
> trouble. Some single port boards have  proprietary interconnects to
> sync multiple boards of the same vendor, but by buying one card /
> gateway with two PRIs you can skip the complexity.
> Using a standalone mediagateway like the Patton also makes it possible
> to put your server wherever you like and not worry about cabling the
> PRIs to the rack. You can route calls to multiple servers (e.g. send
> calls to server2 if server1 is down etc.) and don't depend on the
> FreeSWITCH machines to be up and running for the HiPath to work.
> We're using this kind of migration setup quite often, starting with a
> "transparent" SmartNode looped in between PRI and "old" PBX, then
> gradually routing numbers to the SIP world.
> Gruß, Markus
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