ADTRAN ISDN 2B1Q manual ISDN BR1/8 Bank BR1/8, Applications, N S W I T, H Nt, NT1 NT1

ISDN BR1/8 Bank (BR1/8)

The ADTRAN BR1/8 BR1TE bank provides an alternative means of housing the ADTRAN U-BR1TE or T-BR1TE and provides network termination for a T1 line. The BR1/8 contains eight channel slots to accommodate up to eight U-BR1TEs or T-BR1TEs. Each channel slot contains three DS0 timeslots allowing all of the channel slots to be used when delivering ISDN Basic Rate (2B+D) Service. The BR1/8 is an economical means to offer ISDN Basic Rate via T carrier. Mounting slots are provided for eight common equipment cards: a PAU, PCU, OIU-2, RU, LIU, ACU, TU, and CAU. It is available in 23-inch mounting.

APPLICATIONS

The ADTRAN U-BR1TE is suitable for use in both Central Office and customer premises environments. The use of a single wire pair for full-duplex operations greatly simplifies the administration of cable plant. The capability of the U-interface to serve mixed wire gauges, and nominal distances up to 18,000 ft. make it the universal choice for ISDN deployment.

The ADTRAN U-BR1TE is ideally suited when the need arises to extend ISDN service beyond the normal

servicing range. The ability to provide ISDN services is only limited by the range of available T carrier lines.

In instances where the 2B1Q U-interface card is not available in the digital switch, it is possible to use ADTRAN T-BR1TEs and U-BR1TEs in a mixed application. This application allows the 2B1Q T1.601- 1992 U-interface to be delivered from a digital switch which does not yet support it.

U-BR1TE Applications

I

SU

DLT

N

S

W

I

T

CT

H NT

			LOCAL EXCHANGE
	U	D4 (BR 1/8)	D4 (BR 1/8)	U
		U-BR1TE	U-BR1TE
		CHANNEL	CHANNEL
		BANK	BANK	18,000 FT.
			LOCAL EXCHANGE
		D4 (BR 1/8)	D4 (BR 1/8)	U
T		U-BR1TE	U-BR1TE
		CHANNEL	CHANNEL
		BANK	BANK	18,000 FT.

NT1

NT1