Operating instructions
TransTel TD-1648i / TDS-600 Programming Manual 
41
 
S-Interface Connection: 
If the user has programmed the ISDN interface of SIU to a S-Interface, the wiring should be as the following: 
 
Bus Configurations on the S/T Interface: 
  Point to Point: 
  d1: 750m ~ 1000m; Length limitation by attenuation of 6dB at 96kHz.   
  Short Passive Bus: 
d2: 100m ~ 
200
m; 
Len
gth 
limi
tati
on 
by 
rou
nd trip delay 10us to 14us, not by attenuation.   
d3: Recommendation with a cord having a minimum length of 5m and not more than 10m.(5m d3
10m) 










