Problema com a conexao ppp .

Nao consigo conectar ao provedor com wvdial ou gnome-ppp ...
Estou usando Debian Sarge 3.1

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lucasdeabreu:/home/lucas# wvdial
--> WvDial: Internet dialer version 1.54.0
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATM1L1
ATM1L1
OK
--> Sending: ATX3
ATX3
OK--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Modem initialized.
--> Sending: ATDT7022334455
--> Waiting for carrier.
ATDT7022334455
CONNECT 53333
--> Carrier detected. Waiting for prompt.
--> Connected, but carrier signal lost! Retrying...
--> Sending: ATDT7022334455
--> Waiting for carrier.
User Access Verification
Username:
Username:

% Username: timeout expired!NO CARRIER
--> No Carrier! Trying again.
--> Sending: ATDT7022334455
--> Waiting for carrier.
ATDT7022334455
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