With a BCU, the Total Access 850 can be configured as a
cost-effective TDM channel bank. The BCU activates a T1 network
interface and a fractional T1 (DSX-1) interface located on the rear
of the chassis.
The RCU is another system control option that offers TDM
functionality and a migration path to packet technologies including
ATM. The RCU also offers an integral IP router and activates a
Nx56/64 V.35 port on the rear of the chassis for connecting an
additional external data device.
Common cards required for operation are a power supply unit
(PSU) and a system control unit.
Hot-swappable modules may be replaced without disrupting other
The four-circuit-per module design ensures that a maximum of
only four analog circuits are affected when replacing a
A compact, metal chassis suitable for the customer premises or
the central office provides added safety and reliability.
Analog FXS and FXO voice expansion (four per board)
Supports TR-08 signaling
TDM to ATM migration
Modular network interface for future xDSL compatibility
Framing: D4 (SF)/ESF, TR-08, AT&T 54016 or ANSI
Line Code: AMI/B8ZS
Input Signal: 0 to -36 dB
DS0 Assignment: User selectable
T1 Transmit Timing: Loop and local TR-08 Support: Single Party
Ringing (SPR) and Universal Voice Grade (UVG) analog ports
supported with FXS modules. CLASS® services.