Thank you for your suggestion. I have checked the Beronet switch but unfortunately, it is not possible control each port’s status independently (i.e. all 4 ports in a group are either all master or all slave.) It looks like the Digium r850 have this feature, I’ll test it and report back.

On 09 Feb 2014, at 14:30, Karsten Horsmann <khorsmann@gmail.com> wrote:

Hi Vallimamod,

maybe some product like the beronet.com failover-switch for PRI maybe a solution.

http://www.beronet.com/product/failover-switch/#2

2014-01-31 19:15 GMT+01:00 Vallimamod Abdullah <vallimamod.abdullah@imtelecom.fr>:
Hi List,

I have freeswitch on a server with a sangoma A104D card and ss7 lib, with 4 E1 links. All links carry ss7 signalling information and are grouped in 2 linksets.

I would like to add some redundancy or failover with a 2nd identical server so that if the first one fails, I can do some kind of ’sofia recover’ and retrieve all ongoing calls. Or at least, reduce the downtime to a few seconds.

I cannot just put each linkset on a separate server as the signalling information for a given call may arrive on any link set. For example, I can receive the call setup on a linkset and the release on another.

Also, I cannot have 2 point codes with my telco, unfortunately.

What do you guys use to solve this problem? Is there a way to forward a ss7 signalling message to another freeswitch or to have a passive listening mode one the backup server (with some kind of switch duplicating the E1 signal on both servers, or just Y cables...)?

Thank you!
- Vallimamod
.