Troubleshooting - D-Link DPH-300 User Manual

Troubleshooting

Troubleshooting
1. The DPH-300 will not make a call using a phone number
„
Check that you did not misdial the number.
„
The phone is not connected to the Internet.
The phone is not registered with the D-Link IP Network Manager. It
may take the phone a few minutes to register.
settings, including DNS.
Far side of the call is not registered with the D-Link IP Network Manager.
If you are calling someone who has an videoconference d e v i c e
i n a d d i t i o n t o a DPH-300, you may have to make direct IP calls to
them.
2. The DPH-300 can't make direct IP calls
„
The phone is not connected to the Internet. See the Internet Connection
sections of this user manual.
„
The person you are trying to call is unreachable. Ensure the IP address
of the person you are trying to call is correct.
3. The DPH-300 p roduces an off-hook signal
„
The telephone is off the hook. Hang up the phone.
4. The DPH-300 produces a fast busy signal
„
Person you are trying to call is not registered with the D-Link IP Network
Manager. Call the person using direct IP or wait until the person is
registered with the D-Link IP Network Manager.
„
Person you are trying to call is in a call or has rejected your call. Try your
call at a later time.
5. DPH-300 doesn't ring with an incoming call
„
Telephone cable is not properly plugged into the wall or the DPH-300.
Verify that the cable is connected properly.
6. Phone freezes-up while answering a call
„
Phone is not functioning properly behind a firewall. See page 65 "Router
Port Configuration".
7. No audio in call
„
Port forward the appropriate ports to the phone. The phone needs ports
1720 (TCP) and ports 15328-15333 (TCP and UDP) open to function
properly. See the section Opening Ports on Routers and Gateways on
page 58, or consult your router's documentation or your network
administrator for help on doing this.
D-Link Corporation
DPH-300 User's Manual
Verify all network
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