[Freeswitch-users] Freetdm ss7 redundancy / failover

[Vallimamod Abdullah]

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
.

[Karsten Horsmann]

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 <

Post by Vallimamod Abdullah
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
.
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[Vallimamod Abdullah]

Hi Karsten,

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.

Best regards,
Vallimamod
.

Post by Karsten Horsmann
Hi Vallimamod,
maybe some product like the beronet.com failover-switch for PRI maybe a solution.
http://www.beronet.com/product/failover-switch/#2
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
.

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