Route List failover

Sakitha Piyath Sudasinghe · ‎05-22-2016

We have a CUCM system with CUCM version 10.5 and CISCO 3825 and 3845 as voice gateways which holds multiple E1s. Our customer has a requirement to route the calls from a separate E1 if the first E1s channels are fully utilized.

For this what we have done is put the two Gateways in two different Route groups and put these two Route groups in one Route list and in the user route pattern point towards this route list. From our knowledge this should work (Please correct if we are wrong). But at the moment customer is indicating that it is not and the secondary E1 never gets a call. The first E1s service provides confirms that on occasions there E1 has all channels utilized but the second E1 did not get the call.

In the service parameters below are the settings regarding routing.

Stop Routing on Out of Bandwidth Flag : False

Stop Routing on Out of Bandwidth Flag: False

Stop Routing on User Busy Flag : False

Can anyone please help us with this matter.

Thanks,

Terry Cheema · ‎05-23-2016

What type of gateway is it - SIP/MGCP/H323? Off the top of head the setup looks right though. Can you test this in a window by either doing a shut down on the primary line or changing the route group priority to make sure the backup line is functional if not tested before - to make sure configs etc are correct?

-Terry

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Sakitha Piyath Sudasinghe · ‎05-23-2016

The gateways are configured as H.323 Gateways. Yes I have tested the secondary line and it is functional without any issues.

Terry Cheema · ‎05-23-2016

In a window time just try to busy out the primary E1 line by using below commands and test it, if the calls are overflowing or not:

interface Serial0/0/0:15 (your pri- dchannel)
isdn service b_channel 0-31 state 2 soft

State 2 = out of service, soft means - do not disconnect active calls

range 0-31 or 0 for full line or busy out say 30 channels - make a test call through the primary, all channels are now busy - make another test call and test if it goes thru the backup gateway or not.

If not try to reset the Route list and try again.

-Terry

Sakitha Piyath Sudasinghe · ‎05-25-2016

Our first E1 is not a PRI. It is an R2, hence there is no serial d-channel. Is there any way to do this. Our 2nd E1 is a PRI. I will try to see swapping the E1 order. Can being in two channeling methods effect the fail over.

Thanks,

Regards.

Sakitha Piyath Sudasinghe · ‎07-27-2016

Tried out what you suggested. After busing out the channels the fail over is working fine. Informed the customer to observe and escalate if necessary. Seems like working fine. Thanks you very much for the support.