Telephone Problems; Table 148 Troubleshooting Telephone - ZyXEL Communications ADSL VoIP IAD with 802.11g Wireless 2602HW Series User Manual

44.10 Telephone Problems

Table 148 Troubleshooting Telephone

PROBLEM
The telephone port
won't work or the
telephone lacks a
dial tone.
I cannot call from
one of the
Prestige's phone
ports to the other
phone port.
Chapter 44 Troubleshooting
CORRECTIVE ACTION
Check the telephone connections and telephone wire.
Make sure you have the Voice SIP Settings screen properly configured.
You cannot call the SIP number of the SIP account that you are using to make a
call. The Prestige generates a busy tone and does not attempt to establish a call
if the SIP number you dial matches the outgoing SIP number of the phone port
you are using.
For example, if you set Phone 1 to use SIP account 1 and set Phone 2 to use SIP
account 2, then you can use Phone 1 to call to SIP account 2's SIP number or
Phone 2 to call to SIP account 1's SIP number.
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