Adtran 1248 Manual do Utilizador descarregar pdf (Página 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.

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179675

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TOP:POTS BOTTOM: ADSL+POTS PORTS 1-24

TOP:POTS BOTTOM: ADSL+POTS PORTS 25-48

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Adtran 1248 Manual do Utilizador Página 38