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Ordering T1/RBS Service
Ordering T1 Robbed Bit Signaling (RBS) Service for Dialogic® Brooktrout® TR1034 T1 Fax Board
Contact your Advantage Technologies representative at 1-212-717-7700 with any questions regarding
cabling and trunking.
Product Manufacturer:
Products:
Dialogic Corporation (formerly: Brooktrout Technology)
Dialogic® Brooktrout® TR1034+PxH-T1 Fax Board (“TR1034 Board”)
where ‘x’ denotes a 4, 8, 16, or 24-channel board
T1 Service Type:
Robbed-Bit Signaling (RBS), four-wire (note 1)
Signal Protocol:
E&M Wink (generally used) or E&M Immediate (note 2)
Line Coding:
B8ZS (generally used) or AMI
Frame Mode:
Extended Super Frame (ESF)(generally used) or Super Frame (SF) /
D4
Channels:
1-24
Dial Tone:
Optional
CSU:
DNIS Digits:
Wall Jack Required:
Connector for TR1034 Board:
NONE on-board. (note 3)
DTMF (generally used) or Pulse
USOC-RJ-48C
see note 4 below
Note 1: Additional information on 'T1 Service Type':
When using a Brooktrout TR1034 Board, the type of T1 line that must be supplied is a Robbed-Bit
Signaling (RBS) T1 line, which also may be described as an A/B signaling T1 line, or an E&M tie
trunk. This type of signaling is in-band, meaning the signaling information is carried on the same
channel as the traffic. The physical connection must be a 4-wire connection; no other type of
physical connection is supported by the Brooktrout TR1034 Board.
Note 2: Additional information on 'Signal Protocol':
The Brooktrout TR1034 Board needs the signal protocol to be consistent across all T1 channels,
in both directions. By 'E&M', it is meant that the signaling bits do whatever the A-bit does.
Note 3: Additional information about 'CSU':
The FCC requires an external CSU/DSU device to be installed on any T1 digital line supplied
directly from your local telephone service provider.
228 East 45th Street | New York, NY 10017 | tel. 212-717-7700 | fax. 212-710-5099
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Note 4: Connecting the Brooktrout TR1034 Board to T1 Telephone Service
Connecting the Brooktrout TR1034 Board to T1 Telephone Service
If your telco or service provider or PBX support personnel are not familiar with the Brooktrout
TR1034 Board, and thus are not sure how to treat it, you may tell them to view the Brooktrout
TR1034 Board as a PBX. The telco or service provider should set up a 'tie trunk', or 'tie line', from
its side to the Brooktrout TR1034 Board, just as if it were setting up a line to a PBX. The service
must be 'tie line' or 'tie trunk'. Off-premise 'extensions', or 'stations', are not supported.
Cable note:
Although standard CAT-5 (unshielded) cable will work in many situations, Shielded Twisted Pair
(STP) cabling can be used to provide protection against electrical interference, particularly on
longer cable runs.
Additional information on signal regeneration, and CSUs:
The cable length between the last signal regeneration point on the T1 circuit and its termination
point (the connector on the Brooktrout TR1034 Board) determines whether you must connect the
Brooktrout TR1034 Board to an external CSU (Channel Service Unit) or directly to a T1 circuit.
If the last point of signal regeneration on the T1 circuit is less than 500 feet in cable length from
the Brooktrout TR1034 Board, you do not need to connect the Brooktrout TR1034 Board to a
CSU. If the cable length from the Brooktrout TR1034 Board to the last point of signal regeneration
exceeds 500 feet (even if installed behind an in-house PBX system), you must connect the
Brooktrout TR1034 Board to an external CSU device and the CSU to the T1 circuit.
228 East 45th Street | New York, NY 10017 | tel. 212-717-7700 | fax. 212-710-5099