Grandstream Networks HT503 User Manual

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HT503 User Manual
Figure 1: Connecting the HT503
The HT503 has one FXS port and one FXO port. The PHONE port next to the power supply is an FXS port.
The LINE port on the back right of the HT503 is an FXO port. Both the FXS port and the FXO port can have
a separate SIP account. This is a key feature of HT503 as it supports simultaneous calls on both the FXS
port and FXO port. Telephone calls can be originated from or terminated on the PSTN network remotely via
the FXO port.
Table 1: Definitions of the HT503 connectors
12VDC, 0.5A
Power adapter connection
LAN Port (RJ-45)
Connect the LAN port with an Ethernet cable to your PC.
WAN Port (RJ-45)
Connect the WAN port to the internal LAN network or router.
PHONE (RJ-11)
FXS port to be connected to analog phones / fax machines.
LINE (RJ-11)
FXO port should be connected to the PSTN line
HT503
Front View
HT503
Back View
Display LEDs
(Green)
RJ-45 Ports
10/100 Mbps
Reset
Power
Supply
RJ11
FXS Port
RJ11
FXO Port

Grandstream Networks HT503 Specifications

General

Brand	Grandstream Networks
Model	HT503
Category	Telephone Accessories
Language	English