OpenVox B100E on DAHDI User Manual page 29

available. In most cases, power is not provided from the telephone
company.
 BRI S-Interface
8-pin RJ45 port PIN
1
The BRI S-Interface is a 4-wire interface, with separate Transmit and
Receive pairs. It can be operated in four modes:
 Point-to-Point Mode allows one logical terminal that may be up to 1
KM from the NT-1
 Short Passive Bus Mode allows connection of up to 8 terminals in
parallel on the S/T bus. The terminals can be within 100 to 200 meters
from the NT-1.
OpenVox Communication Co. LTD.
VoIPon www.voipon.co.uk sales@voipon.co.uk Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299
1 White/Orange
2
3 White/Green
4
5 White/Blue
8
6
7 White/Brown
8
B100E on DAHDI User Manual
Color Description
Orange
Blue
Green
-48VDC Power(optional)
Brown -48VDC Return (optional)
N/A
N/A
Receive+
Transmit +
Transmit -
Receive -
28
URL: www.openvox.cn