Talkswitch TS-860i User Manual page 54

Problem
I can't make Internet
calls, the VoIP indicator
on the base is not lit,
and the right status
indicator in the upper
left corner of the
display is black.
(continued)
When I make Internet
calls, the sound quality
is poor.
I cannot make Internet
calls, but it worked
yesterday.
4 8
Possible causes
The router blocks
Internet telephony.
(continued)
The router firmware
needs updating.
There is too much
simultaneous data
traffic on your
broadband connection.
Your Internet Telephony
Service Provider's
Quality of Service is
based on a "best
efforts" rather than a
guaranteed voice
priority method.
The base is not logged
in at the Internet
Telephony Service
Provider.
The router is turned off.
T S - 8 5 0 i A N D T S - 8 6 0 i U S E R G U I D E
Possible solutions
Use port forwarding.
The default SIP port is
5060, and the default
RTP port is 5004.
Ensure that your router
always assigns the same
IP address to your TS-
850i/TS-860i when
using port forwarding.
For more information,
check your router's user
guide.
Check your router's user
guide to see how to
update the firmware.
Reduce the amount of
traffic on your
broadband connection.
Sign up for a Quality of
Service agreement with
your broadband
provider.
Order a connection with
higher speed from your
broadband provider.
Contact your Internet
Telephony Service
Provider regarding
ensured voice
prioritization across
the network.
Check that all cables
are connected properly,
and check that power is
turned on, and then
reset the base.
Turn on the router.