[Asterisk-bsd] Asterisk not accepting multiple SIP phone logins

[Juki]

Hi all,

I have Asterisk running on FreeBSD 4.x and I have made configurations to
sip.conf, extensions.conf and voicemail.conf. I have also setup SIP phones
on two different PCs. My problem is that when one of the SIP phones logins
in, the other won't.

My sip.conf has:
[101]
type=friend
host=dynamic
username=101
secret=test
dtmfmode=rfc2833
context=from-sip
mailbox=201
callerid="101" <2125>
nat=yes

My extensions.conf has:
exten => 101,1,Dial(SIP/101,20,tr)
exten => 101,2,VoiceMail,u101
exten => 101,102,VoiceMail,b101

My voicemail.conf has:
101 => 2348,Emma, kidjue at yahoo.co.uk

Any ideas are most welcome.

-- 
Rgds,
Juki