Motorola McIAS 1610 Series System Manual page 85

McIAS 1607 and 1685 Analog Connectors
The McTi-8L pin connections given in Table 3-2 assume that Channels 1-4 (J3) and
Channels 5-8 (J4) come from the McTi board installed directly above the SBC board.
The speaker output leads (A and B) for Channel 8 are associated with the J4
connector.
McIAS 1610 Analog Connectors and Associated Slots
For installations that are exclusively configured with analog McTi boards, the channels
would be distributed as follows:
Channels 1-4 (J3) and Channels 5-8 (J4) come from the board in Slot 4,
Channels 9-12 (J6) and Channels 13-16 (J7) come from the board in Slot 3, and
Channels 17 & 18 (J3), Channels 19 & 20 (J4), Channels 21 & 22 (J6), and
Channels 23 & 24 (J7) come from the board in Slot 2.
Speaker output leads (A and B) are distributed as follows, depending on the number
of McTi boards installed:
Channel 8 (J4) comes from the board in Slot 4,
Channel 16 (J7) comes from the board in Slot 3, and
Channel 24 (J7) comes from the board in Slot 2.
37