by Walt Medak

Q:  We are in the process of cutting over from our trusty old Avaya system to that “other brand” of VoIP phone systems.  We are using both systems currently, with a tie line set up between them.  We just installed some SIP trunks in the “other” system, and want to start routing some of our outbound calls from the Avaya phones across the tie line and out the SIP trunks.  The trick is, my boss wants me to set this up based not on the number dialed, but on the Class of Restriction of the phone.  I know how I could do it based on the phone number using ARS Analysis and route patterns, but I don’t know how I can do it with the COR.  What do I need to do?

A:  There is a way to route calls based on a setting that’s in the COR, assuming you have a couple options enabled in your system.  This way uses time of day routing and ARS partitioning.  You will need to create new route patterns to send calls over the tie line.  How many you will need to create will depend on how complicated your existing routing is for local calls, long distance calls, toll free, 911, etc…

Once you have all the new route patterns set up, you will need to modify the partition routing table.  I would use partition group number (PGN) 1 for the phones that will remain routing over the Avaya trunks for now, and partition group number (PGN) 2 for the phones that need to route to the SIP trunks.  In the column for PGN 1, you would enter all of the existing route patterns for the calls to go over the Avaya trunks.  Column PGN 2 would be for the corresponding route patterns for the SIP routing.

After completing the partition routing table, you will need to go through your entire ARS Analysis table and replace the route pattern number for each entry with the corresponding partition route.  For example, if local calls used route pattern 2 and you put that in the partition routing table in row 3, you would replace the “2” with “p3″.

Next, you would need to create new COR’s for the phones that you want to route to the SIP trunks.  The only difference between the old and new COR would be which Time Of Day chart to use.  I would leave the existing phones as chart 1, and put the “SIP routing” phones in chart 2.  Then, change the time of day routing table 2 to put the phones in PGN 2.

Finally, when you are ready to change a phone from routing over the Avaya trunks to the SIP trunks, you would just need to change that station’s COR to one of the new ones you just created.  This is a fairly complicated procedure to try to explain in a short forum like this.  Please fell free to call if you have any questions.

And as always, if questions please call 800-452-6477.

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