SEI Telephony Products : ISDN Premises Power : Stand Alone : DP20B Stand Alone Power

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ISDN Premises Power

>	NT1's
	• P230 • B300
>	PoweRack SERIES
	• PR300e • PR230e • PR96e

>	DP SERIES
	• DP140e • DP240e • DP700e

>	1145 REPLACEMENTS
	• S1145B Battery Pack • S1145R Power Unit

>	BATTERY PACKS
	• BP-8U • High Capacity Batteries • Battery Replacement Program

>	STAND ALONE
	• DP20B • DP20B-E • B300 Mounting Plate • 1215B

>	ISDN DISTR. BAYS
	• PDP30 • DM500

Stand Alone

DP20B Stand Alone Power

The DP20B is a small battery-backed desktop telecommunications power supply that provides power for up to three NT1's and six multipoint ISDN telephones. It supplies 48 VDC and supports a twenty watt load. The built-in battery provides up to four hours of holdover time. The DP20B has three eight way telephone jacks on the rear panel, and allows powering of both the NT1 and the terminal equipment at either the U interface or the S/T interface.

The DP20B-E ("Extender" version) adds a distribution module and a mounting plate that is pre-configured for multiple NT1's without the need for "U" adapters. The DP20B-E also supports fast frame video with three BRI lines. The DP20B-E can be operated on the desktop or mounted to the wall.

DP20B Stand Alone Power

The B300 NT1 MP is the optional mounting plate that provides an easy-to-install location for holding up to 3 B300 NT1s. It holds the NT1s securely and can be mounted to a wall, rack or sit on a desktop.

DP20B Stand Alone Power

For applications not requiring battery backup, the 1215B wall mount power supply provides an economical solution for one NT1 and two phones.

Ordering Information
MODEL #	DESCRIPTION	DIMENSIONS (W"xD"xH")
DP20B	Stand alone power supply and 4 hour battery for 1 NT1 and 2 phones	5.5 x 7.5 x 2
DP20BE	Stand alone power supply and 2 hour battery for 3 NT1's and 6 phones	7 x 14 x 4
B300 NT1 MP	Mounting plate for up to 3 B300 NT1s	9 x 5.5 x 1.2

Technical Specifications

ELECTRICAL

Input Voltage 85-132 VAC
Frequency 45-440 Hz
Output Voltage 48VDC (+/- 5%)

ENVIRONMENTAL

Temperature: -20° C to +40°C
Humidity: 95% non-condensing
Optimum battery life will be achieved if the unit is operated at a temperature of 25° C.

NT1 COMPATABILITY

B-300

STANDARDS

UL 1778

For order information or technical support call us at
800-765-4734
or email us using our Contact Us form


>	RELATED FILES

	Online Powering Guide A complete technical overview of ISDN premises powering.
	Stand Alone Product Information Sheet