
APOS Quick Operation Guide Voice over IP
AddPac Technology Proprietary & Documentation 130 - 102
E1/T1 Voice Interface Configuration/ R2 DTMF
The popular E1/T1- R2/DTMF configuration commands are explained
at this chapter.
NOTE
This application is supported by AddPac Technology’s all VoIP
products along with VoIP Gateway which can be equipped with
digital E1/T1 voice interface module.
Network Diagram
Fig. 6-4 VoIP gateway digital E1/T1 R2/DTMF
In the above example, the PBX and VoIP GW at the head office are
operated with R2/DTMF signaling type. In case of R2/DTMF, only
signal and channel configuration is required, and the preconfigured
ISDN-PRI becomes invalid.
Also, the compand-type of PBX and the VoIP GW should be
configured same according to the PCM type (A-law or U-law).
The below is the default parameters of digital E1 ISDN-PRI of the VoIP
Gateway.
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