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2-10 Hardware Description
Vanguard Daughtercards
Dual E&M The Dual E&M Daughtercard has two E&M interfaces. The ports use RJ11
connectors.
Figure 2-10 shows the Dual E&M Daughtercard connectors as they appear on the
back panel.
Figure 2-10. Dual E&M Daughtercard Connector
ISDN BRI-U Data This card provides 2B+D Channel through an ISDN BRI U interface. It conforms to
ANSI T1.601 1992 (2B1Q), is LAPD:ITU Q.921 compliant, and supports the
following:
• Integral X.31
• Q.931 dial support
• NI1, 5ESS, DMS-100 switch types
• D Channel Packet Mode
• Leased Circuit Services (I Interface)
• Japan High-Speed Digital
Figure 2-11 shows the ISDN BRI-U Daughtercard connector as it appears on the
back panel.
Figure 2-11. ISDN BRI-U Daughtercard Connector
BRI U