Instruction manual

Total Access 850 System Manual Section 1 System Description

Access Modules (Requiring a BCU)

• E&M/TO Access Module (P/N 1180402L1)

• OCU DP Access Module (P/N 1180005L1)

• Single DS0 DP Access Module (P/N 1180003L1)

• Nx56/64 (V.35) Access Module (P/N 1200372L1)

Each access module is hot-swappable, with configuration restored upon replacement.

Total Access 850 Bank Controller Unit (BCU) (P/N 1200373L1)

The BCU is a common module plug-in unit with a built-in CSU. The BCU provides all control functions

for the Total Access 850 common units and all individual access modules. A faceplate DB-9 (

ADMIN)

interface provides access for a VT100 terminal for screen menu provisioning, and bantam test jacks

provide transmit and receive monitoring. An additional DB-9 (

TEST) interface provides timing for DS0

test equipment. Faceplate LEDs show status information for the network and Fractional T1 (DSX-1 on L2

only). The unit consists of a main circuit board and daughter card and inserts directly in the controller slot

on the Total Access 850 shelf. An 8-position DIP-switch is mounted on the daughter card and is used for

T1 provisioning and clocking.

BCU with Fractional T1 (P/N 1200373L2)

The BCU with Fractional T1 provides all the functionality of the traditional BCU as well as a

DSX-1/Fractional T1 interface for additional T1 service.

T1 RCU (P/N 4203376L1#TDM, 4203376L1#ATM and 1203376L1)

The RCU is a dual board assembly that provides the network interface for the Total Access 850 system.

The RCU can provision, test, and provide status for any card in the system. A faceplate DB-9 (

CRAFT)

interface provides access for a VT100 terminal for screen menu provisioning, and bantam test jacks

provide transmit and receive monitoring capabilities. Terminal menu access is also provided through the

RJ-45

CRAFT interface located on the rear of the chassis. Faceplate LEDs show status information for the

network port and Ethernet port. In addition, the RCU has an integrated router access through the 10BaseT

connector on the backplane of the chassis. (3rd Generation RCUs provide a 10/100BaseT interface.) A

DSX-1/Fractional T1 interface for additional T1 service is also provided.

SDSL RCU (P/N 1200377L1, 1200377L2)

The SDSL RCU is a dual board assembly that includes an SDSL network interface, Nx56/64 V.35

interface, and built-in IP router. The SDSL RCU can provision, test, and provide status for any card in the

system. The faceplate has a DB-9 (

CRAFT) port connection, and network, V.35, and Ethernet LEDs. An

additional RJ-45 terminal menu interface is located on the rear of the chassis and is labeled

CRAFT. The

SDSL RCU is only used in ATM applications. It supports vendor-specific SDSL protocols, ATM, and

Copper Mountain Frame Relay. Therefore, the SDSL RCU can interoperate with a variety of DSLAMs,

including Lucent, Nortel, Copper Mountain, Nokia, and Alcatel. It also supports several voice gateways,

including Jetstream and Broadband Loop Emulation Services (BLES) gateways. The SDSL RCU has

Replacing an access module with a different module type will result in configuration loss.