ADTRAN 1248 - Manual (Page 38)

Total Access 1248 Octal T1 IMA DSLAM with Modem Installation and Maintenance Practice
3-14 61179641AL4-5B
ADSL2+ Plus POTS Connections
The Total Access 1248 utilizes four 25-pair amphenol connectors (see Figure 3-10 ), which are
used as follows:
• Two amphenols for connection to the POTS pairs
• Two amphenols for connection to the ADSL2+ plus POTS pairs
Figure 3-10. Total Access 1248 POTS and ADSL+POTS Connections
POTS Interface
Each POTS interface on the Total Access 1248 accepts a POTS signal from the Central Office
(CO) and passes it through to the ADSL2+ plus POTS interface for delivery to the subscriber.
POTS service is not affected by loss of power to the unit.
ADSL2+ Plus POTS Interface
Each ADSL2+ plus POTS interface provides transport for standard POTS from the CO to the
subscriber. The frequency ranges for Total Access 1248 deployment are as follows:
• POTS accommodates frequency ranges up to 4 kHz
• ADSL and ADSL2 accommodates frequency ranges up to 1.1 MHz
• ADSL2+ accommodates frequency ranges up to 2.2 MHz
Any analog devices connected to this interface must use a low-pass filter to prevent high
frequencies from interfering with the device.
FAN MODULE
1179675L1 1179641AL4
-48V .....,5.0A .. USE COPPER CONDUCTORS ONLY!
-48V RET -48V RET
TOP:POTS BOTTOM: ADSL+POTS PORTS 1-24 TOP:POTS BOTTOM: ADSL+POTS PORTS 25-48