Chapter 6. Configuration58 ISU 2x64 Dual Port ISDN Service Unit User Manual 61200051L1-1DTXDEQThis option specifies the length of time both endpoints attempt toequalize the network delay between the bearer channels beforedetermining the BONDING call has failed. Values of 1, 2, 5, 10,20, 50 (default), 100, and 200 seconds may be selected.TANULLThis option specifies the length of time the answering endpointattempts to detect the BONDING negotiation pattern from theoriginating endpoint before aborting to clear channel mode. Ingeneral, this timer value should be left at the factory default set-ting of 10 seconds. However, it may be necessary to shorten thistimer if the DTE equipment connected to the ISU also has timerconstraints for completing non-BONDING parameter negotia-tion. Values of 1, 2, 5, 10 (default), 20, 50, 100, and 200 secondsmay be selected.TCIDThis option specifies the length of time both endpoints attempt tonegotiate an agreeable value for bearer channels and channelcapacities before determining the BONDING call has failed.Select from values of 1, 2, 5 (default), 10, 20, 50, 100, and 200 sec-onds.Async. Rev.This option specifies the negotiation revision for asynchronousBONDING. Rev. 1 specifies multi-vendor compatible negotiation.Rev. 0 specifies ADTRAN proprietary negotiation. This optionhas no effect on synchronous negotiation.V.120The V.120 protocol is a CCITT compliant rate adaptation methodproviding DTE service between the ISU 2x64 and other V.120compliant devices at rates less than the 64 kpbs ISDN bearerchannel rate. V.120 supports both synchronous and asynchro-nous DTE rates. See Recommended Operating Protocols on page 6for available V.120 rates. Figure 6-21 illustrates the menu path forselecting V.120.
