3Com AccessBuilder 500 User Manual - page 95
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124
Interface Cable Characteristics
B-5
Interface Cable Characteristics
WAN Port Connecting Cable – V.11/X.21 Support
The WAN port terminates with a 25-way D-type female connector. The
port can be configured to support V.11 signalling characteristics at data
transfer rates up to 2.048 Mbps. The WAN port connecting cable is not
supplied with the unit. The following signalling characteristics should
be observed when purchasing or fabricating a suitable cable.