Overflwo to Backup not working

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m0e

Overflwo to Backup not working

Post by m0e »

Hi Guys,

I just upgrade the 4400 from R.4.1 to R.6.2, the upgrade running well and works fine. But when I tried to configured the IP Trunk and PRA Trunk to backup I got there is no overflow.
Ok... here the scenario that I have been done... Let's say I got 2 site A and B. I got 60 channel IP trunk from side A and B (this is the primary link) and also I got 60 Channel PRA Trunk (BackUp Link). I need the system to overflow the traffic through Backup Link if the primary link is down. I have configured the trunk and VPN overflow, when I test to disconnected the IP trunk (Primary Link) the traffic was not overflow to BackUP Link...

I don't know if I forgot some configuration... does anyone have same issue ?

Thanks
cavagnaro

Post by cavagnaro »

Have you tried using ARS routes? How do you simulate the trunk going offline?
vad
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Joined: 23 Sep 2004 06:47

Post by vad »

As I understand - you have hybrid link with IP signaling and VPN overflow (IP trunk group) but what about PRA - this is usual ISDN TG (and you can use node access feature) or this is second access in hybrid link (with signaling in D-chanel)?
You can use VPN overflow only if you have no problem with internode signaling - just manage two routes in ARS.
If you have only one signaling - IP - and disconnect this link - you can use private to public overflow.
For VPN overflow - used Access COS (VPN cost limit) and Pfone feature COS (Overflow of private to public if busy line) - internode signaling works.
For public to private overflow - phone feature COS (O/S private to public overflow) - internode sigaling absent.
m0e

Post by m0e »

Hi guys...

thanks for suggestion, FYI I have tried to use ARS but still can not overflwo... here my config for ISDN Trunk :

┌─Consult/Modify: Trunk Groups───────────────────────────────────────────────â”
m0e

Post by m0e »

I Just unplug the cable to switch from INTIP card... and try to make a call whenether the call would be reroute to backup Link.. but the call seems busy or Network O/S link...
vad
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Post by vad »

If you unplug cable only from INTIP - in this case you must have signaling. Check with "suproutage" command - you will have signaling.
In you ISDN TG configuration (if VPN overflow with IP TG works) - global parameters REMOTE NETWORK - manage like for IP TG, local parameters - SUPERVISED BY ROUTING=yes.
doddykartiwa

Secondary access hybrid link

Post by doddykartiwa »

Hi vad,

I worked with moe (the author of this topic), and we are considering using secondary access on the hybrid using D-channel as signalling.

But does it require a license? We are trying to see all the angles before actually doing it. Because its is a very large setup and the security is pretty tight, that is why we have to be carefull of what we are going to do.

Thanks
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