Nortel Networks 2700 manual T1/E1 CSU/DSU WAN interface card, Isdn BRI U cable pinouts

92 Appendix A Technical specifications

Table 28 provides the ISDN BRI U cable pinouts.

Table 28 ISDN BRI U cable pinouts

Pin	Function
1	N/C
2	N/C
3	N/C
4	U interface network connection (tip)
5	U interface network connection (ring)
6	N/C
7	N/C
8	N/C

T1/E1 CSU/DSU WAN interface card

The T1/E1 CSU/DSU WAN interface card has a single connector that provides the signals needed to interface to T1 or E1 equipment. Nortel ships this interface card as a half-height card and as a full-height card.

Figure 39 shows the T1/E1 CSU/DSU WAN interface card (half-height card).

Figure 39 T1/E1 CSU/DSU WAN interface card

Note: For E1 service, you must install the half-height version of the T1/E1 CSU/DSU WAN interface card.

Figure 40 on page 93 shows the T1/E1 CSU/DSU WAN interface card (full-height card).

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