Instruction manual

61200780L1-1C © 2004 ADTRAN, Inc. 49
ATLAS 800 Series System Manual Option Module Pinouts
Engineering Guidelines
Octal FXS Option Module
The Octal FXS Option Module provides eight analog voice-grade interfaces. Each interface can operate in
loop-start or ground-start mode, providing talk battery, off-hook supervision, ringing, and E&M signaling
conversion. Call progress tones, where necessary, are provided to the modules by the ATLAS.
16 41 I V.35 SD Send Data
— 42 O V.35 DCD - Data Carrier Detect
17-18 43 — Ancillary to DCE (Reserved)
19 44 — HSSI SG - Signal Ground
20 45 O V.35 ST - Send Timing
21 46 O V.35 RT - Receive Timing
22 47 O V.35 RD - Receive Data
23 — O V.35 CTS - Clear to Send
— 48 I V.35 Ground/Present
24 49 O HSSI TM - Test Mode
25 50 — HSSI SG - Signal Ground
Pinout 32. Octal FXS Module (8-pin modular)
Pin Name Description
1,2,3,6,7,8 Unused —
4 Ring Ring to and from the analog phone interface
5 Tip Tip to and from the analog phone interface
Pinout 31. NxT1 HSSI/V.35 Module (50-pin SCSI-II and V.35 Winchester) (Continued)
Pin
(+ Side)
Pin
(- Side)
Direction Description