Multi Tech Equipment MTA128ST - Manual (Page 40)

PPP/MLPPP
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for a relatively long period of time (long Low Threshold Sampling Period [S62] with a small Low
Throughput Threshold [S63]).
• If data transmits or is received in bursts and the TA adds and removes a channel too quickly,
increase the High Threshold Sampling Period (S60) and the Low Threshold Sampling Period (S62) and
– decrease the Low Throughput Threshold (S63).
Call Bumping (S-register S64)
• Call Bumping is not available to the host TA if Dynamic Bandwidth Allocation is disabled (S59=0) or if
the Dynamic Bandwidth Allocation scheme is PPP (S59=2).
• If the analog device goes off-hook or there is an indication of an incoming analog call and both B-
channels are in use by a data call, the TA drops the second B-channel and rings the analog device.
• If the analog device goes on-hook or the peer disconnects the analog call, the TA adds the second B-channel
again according to whether BOD is enabled or disabled (S60). If BOD is disabled (S60=0), the second
channel is added immediately. If BOD is enabled (S60 is non-zero), the second channel is added after the
High Threshold Sampling Period (S60) and High Throughput Threshold (S61) determine whether
throughput is high enough to allow adding the second channel.