we have 2 site in witch we install 1 PBX and 1 cisco 7206 VXR router on each side.
The problème is that the E1 controllers (coming from the PBX on a PA-MCX-4TE1)goes down and up alternatively when we exceed 3 E1.
We use a g729r8 codec on the router and 2 serial lines of 4Mbps (2*2Mbps) for 4 E1.
But when i activate the fourth E1 and the traffic exceed the capacity (more than 120 calls), the controllers become instable….
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