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Troubleshooting
ATA Administration Guide 237
D
Press the appropriate code to reset the unit:
• Press 877778# to reset the unit to the defaults as it shipped from the ITSP. This
will reset the User account password to the default of blank.
• Press 73738# to perform a full reset of unit to the factory default settings. The
Admin account password will be reset to the default of blank.
2. Press 1 to confirm the operation.
Press * to cancel the operation.
3. Login to the unit using the User or Admin account without a password and
reconfigure the unit as necessary.
Q. My ATA device is behind a NAT device or firewall and I’m unable to make a
call or I’m only receiving a one-way connection. What should I do?
A. Complete the following steps.
1. Configure your router to port forward “TCP port 80" to the IP address currently
being used by your ATA device. If you do this often, we suggest that you use
static IP address for the ATA device, instead of DHCP. (For help with port
forwarding, consult your router documentation)
2. On the Line tab of the administration web server, change the value of
Nat
Mapping Enable
to yes. On the SIP tab; change
Substitute VIA Addr
to yes, and
the
EXT IP
parameter to the IP address of your router.
3. Make sure you are not blocking the UDP PORT 5060,5061 and port for UDP
packets in the range of 16384-16482. Also, disable “SPI” if this feature is
provided by your firewall. Identify the SIP server to which the ATA device is
registering, if it supports NAT, using the
Outbound Proxy
parameter.
4. Add a STUN server to allow traversal of UDP packets through the NAT device.
On the SIP tab of the administration web server, set
STUN Enable
to yes, and
enter the IP address of the STUN server in
STUN Server
.
STUN (Simple Traversal of UDP through NATs) is a protocol defined by RFC
3489, that allows a client behind a NAT device to find out its public address, the
type of NAT it is behind, and the port associated on the Internet connection
with a particular local port. This information is used to set up UDP
communication between two hosts that are both behind NAT routers. Open
source STUN software can be obtained at the following website:
http://www.voip-info.org/wiki-Open+Source+VOIP+Software