I have found a 2503 in the back of a cupboard and want to use it to enable systems on a LAN to connect to remote LANs using Basic Rate ISDN.
Q1: Am I right in assuming that I can set up as many routes as I want? (At least the two I need anyway.)
Q2: Can the two channels operate independantly? In other words can a system talk to LAN1 whie another talks to LAN2? If so, can I configure the router so that if only one call is in progress then the second channel can be bundled (to double the throughput) but, if a second call is required then the second channel is released for that call?
Q1: Yes you can. You define "interesting" traffic with ACLs, which causes the router to dial the number you associate with the traffic.
Q2: Yes you can (to both parts) Each Bearer (B)channel can be defined as an individual dial / circuit-switched path. You also have the option of setting traffic thresholds (high/low) to trigger the addition of a second 'B' (which will be joined with the first, usually with MLPPP) to expand your bandwidth.
At the low threshold, the second channel can be triggered to drop.
It's been a while so, off the top of my head, I don't remember if you could assign a priority to the second channel such that if it was needed for a second call, it can be dropped from a MLPPP group for use as a second channel.
I know that on the old 804, if you had one channel assigned as voice/data, an incoming call would cause the channel to drop it's data role, take the voice call, then resume the data role (if necessary, according to the thresholds).
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