Mitel 3300 - Page 82

Hardware Technical Reference Manual
74
Lines or trunks are connected to the BRI Network Services Unit using a 25-pair D-type female (Amphenol)
connector.
Table 47: BRI Connector Pin Allocation
Table 46: T1 and E1 Connector Pin Allocation
RJ-45 Connector
Pin
Signal Name
NT Mode (Switch-6 UP) LT Mode (Switch-6 DOWN)
1 RX Ring TX Ring
2 RX Tip TX Tip
3 Not used Not used
4 TX Ring RX Ring
5 TX Tip RX Tip
6 Not used Not used
7 Not used Not used
8 Not used Not used
Amphenol
Connector Pin
Signal Name
Amphenol
Connector Pin
Signal Name
Amphenol
Connector Pin
Signal Name
1 T1 18 Not used 35 R10
2 T2 19 Not used 36 R11
3 T3 20 Not used 37 R12
4 T4 21 Not used 38 R13
5 T5 22 Not used 39 R14
6 T6 23 Not used 40 R15
7 T7 24 Not used 41 Not used
8 T8 25 Not used 42 Not used
9 T9 26 R1 43 Not used
10 T10 27 R2 44 Not used
11 T11 28 R3 45 Not used
12 T12 29 R4 46 Not used
13 T13 30 R5 47 Not used
14 T14 31 R6 48 Not used
15 T15 32 R7 49 Not used
16 Not used 33 R8 50 Not used
17 Not used 34 R9