maintains a te input queue 620 that can be shared between the two te tunnels in fact it can be advantageous to extend the statistical multiplexing at router 601 to the te queue 620 at router 602 if the two te tunnels have their own input queues then the reserved queue bandwidth will be idle when no traffic is being sent down the respective tunnels where the head end router 601 represents a backbone router that terminates access peering links in a backbone network the traffic volume of for example a voice access router site is typically capped by the total capacity of its uplinks its destination can be anyone of all possible destinations in such a situation the bandwidth of the te input queue shared by the te tunnels at each router can advantageously be set to be equal to or less than the expected maximum throughput of the particular site similarly in fig7 a diagram of a packet switched network of routers 701 702 703 704 is shown illustrating the sharing of a te output queue the dark arrows represent a te tunnel that traverses router 702 and goes to tail end router 704 the dashed arrow represents a te tunnel that also traverses router 702 and shares the same tail end router 704 the two te tunnels for illustration purposes have different head end routers 701 703 router 702 maintains a te output queue 720 that can be shared between the two te tunnels in fact as above it can be advantageous to extend the statistical multiplexing to the te queue 720 at router 702 and permit all te tunnels traversing the same outgoing link to share the queue otherwise if the two te tunnels have their own output queues then the reserved queue bandwidth will.