ZyXEL Communications ISDN Terminal Adapter Omni.Net Lite - Manual (Page 35)

Omni.Net Lite User’s Guide
Chapter 2 Using the Utility 34
Figure 9 Windows 98: Dial-up Connection Property: Server Types
If you choose MLP 128K (dynamic or fixed) in the utility (see Figure 10 on page 35 ) or using
the ATC0=8CI=1 command, the TA needs the username and password in plain text form to
establish the connection. Do not select Enable CHAP in the PPP/MP Parameters screen.
CHAP is described in RFC-1994 and PAP is described in RFC-1334.
2.5.2 Call Bumping (Bandwidth Release) for Voice Calls
While dynamic Multilink PPP is active and you place or answer a voice call from a device that
is attached to one of the PHONE ports,
the TA automatically drops one of the channels and
assigns it to voice calls. If you subscribe to the call waiting service from your local telephone
company, the TA will also drop one of the channels and answer the incoming call. Once a
voice call ends, the TA automatically re-establishes the channel depending on the BOD rule.
2.5.3 Bandwidth On Demand (BOD)
In multilink PPP mode, use BOD to bring up or drop a B-channel depending on current data
traffic. If there is light traffic on the link, one of the channels will be dropped automatically.
On the other hand, if only one B-channel is used and data traffic is high enough, BOD will
bring up the second B-channel to increase the bandwidth of the data link.
The BOD function is only effective on your TA.
For BOD, there are three parameters to set high/low threshold and persist time. Traffic
utilization is measured in the ISDN link. Highly compressible data may not generate enough
traffic to start the second B-channel. Both add-persist time and subtract-persist time must be
set to activate BOD.