Carrier Access SNMP manual Dial Pulse Termination DPT, Termination Options

Termination Options

CO

FXO

Incoming

T1

Outgoing

PBX

FXS

Telephone

Telephone

Fax

Fax

Figure 10-1: FXO Operation

________________________________________________________________________________

	Direct Inward Dialing (DID)
CO	PBX

T1

*Battery Reversal FXS/DPO 12-

Channel Analog Card

Calling Party	Called Party's
	Direct Extension

Figure 10-2: DPT Operation

10.3.2 Dial Pulse Termination (DPT)

In DPT mode, the FXO/DPT offers near end termination for one-way Direct Inward Dial (DID). Two- way DID is provided by CAC’s 4 wire E&M interface. The DPT card interprets T1 signaling bits to:

•provide incoming seizure

•act as a current sink for a PBX -48V battery source

•establish an audio path

9/24/01 10-3