Grandstream HandyTone Analog Telephone Adapters / IAD series offer a comprehensive line of VoIP access devices that feature full compliance with industry standards, superb audio quality, rich functionalities, high level of integration, compactness, and great affordability. | Features | HT-386 | | Ethernet Ports | 1 x RJ45
(LAN) | | DHCP/NAT/Router | No | | FXS Port | 2 | | FXO Port | No | | PSTN Pass-through Port | Yes | | Remote Configuration | TFTP/HTTP |
* FXO port allows local and remote PSTN-to-VoIP call origination and VoIP-to-PSTN call termination, automated call routing through PSTN, and power fail-over. PSTN Pass-through allows local PSTN line service for income/outbound call and failover.
PSTN Pass through port:
What it can do:
- Local manual switching between PSTN and IP mode on a per call basis.
- User can switch to PSTN line by pressing *00 (or the configured strings) for each call before they are placed. The device will revert back to the default IP mode once the phone is hung up.
- It can allow a PSTN call to ring/call the phone connected to the FXS port.
- It also serves as a life line in case of power outage.
What it CANNOT do:
- Terminate a VoIP call into the PSTN port
- Allow a call from PSTN to route other VoIP devices (different from the FXS phone) over the IP network
- Automatically route calls made by the local user to PSTN line Note: On the HT-486 Rev 1.0, the PSTN port is only a life line port that switches to PTSN only on loss of power. FXO port:
It can support all the functions of a PSTN pass through plus:
- Terminate a VoIP call into the PSTN port
- Allow a PSTN call to call either the FXS phone or other VoIP devices over the IP network
- Route call automatically and transparently to PSTN line according to user configuration
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