Specifications

Design Benefits

Modular components allow easy, cost-effective growth in both size and

function. For upgrades from the MERLIN

system family of products, all

analog MERLIN system telephones, as well as wiring, can be reused. For

upgrades from the MERLIN II Communications System, certain trunk and

station modules can also be reused.

Menu-driven system programming maintains the customer’s command

of business operations.

Built-in 1200-bps modem allows fast access to the system by customers

AT&T personnel, or authorized dealers from a remote location for system

programming and maintenance.

Flexible mode of operation saves upgrade costs by allowing system

configuration in one of three modes: Hybrid/PBX, Key, and Behind Switch

Connectivity to other systems in the Behind Switch mode optimizes

existing resources by allowing the system to work as part of another

MERLIN LEGEND Communications System, System 25, System 75,

System 85, Definity® 75/85, or other communications system, The control

unit can connect to another system’s control unit via an off-premises

telephone (OPT) line or an analog or digilal tie trunk.

Digital 2.048-MHz bus supplies a 64-kbps channel on each of the

216 time slots.

68000 Motorola CPU running at 10 MHz with zero wall states provides

fast system performance.

Memory data retention saves time by ensuring that system and extension

programming information is retained for 12 to 30 days, depending on the

system configuration, in case of power failure or system shutdown,

Integrated voice and data capabilities allow users to talk while

transmitting data at speeds up to 64 kbps.

DS1 interface can be configured for connection of either T1 or PR1 for

basic call control with the 4ESS™ or 5ESS PRI service specifications.

Basic Rate Interface (BRl) S/T protocol supports premier digital multiline

(MLX) telephones with superior display capabilities and supports the

7500B Data Module tor the connection of adjuncts.