3-2 DHS-E Description
DHS-E is expandable to meet a variety of applications. Regardless of the configuration,
the system has sufficient resources to allow completely non-blocked access to all facilities
(intercom and CO lines).
An external music source may be connected to each BGM/MOH Jacks via a 1/8 in. phono
plug for BGM/MOH listening. All system features are supported by the equipment
provided in the DHS-E KSU. The Main Processor Board provides two Dual Tone Multi-
Frequency (DTMF) receivers and two Tone Detectors specifically for ECF, DISA,
Unsupervised CO Line Conference, and Dial Tone Detection.
Connectors for SMDR and PC Programming are standard 9-pin RS-232 (serial) connectors.
Connectors for Loud Bell Control, External Voice Paging, MOH and BGM are 1/8" phono-
type connectors.
The following system configurations are possible:
Telephone Components
Digital Key Telephones (refer to System Components, in Chapter 2, DHS Description and
Installation)
2-Port Analog Adapter
2-Port Analog Expansion
DSS (Direct Station Selector) Console
SLT operations do NOT use System DTMF and Tone Detection
resources.
Table 3-1: System Configurations
Equipment Installed
Maximum Number of
Loop Start Lines
Maximum Number of
DHS-E Digital Key
Telephones
Two 3 x 8 Modules 6 16
Three 3 x 8 Modules 9 24
Four 3 x 8 Modules 12 32
Five 3 x 8 Modules 15 40
Six 3 x 8 Modules 18 48
Key telephones are available in two colors: Off-White and Charcoal Gray.
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