[Asterisk-Users] Unable to register Zyxel WIFI Phone as SIP Client to Asterisk

[Kanuri, Seshu (Company IT)]

Folks!
 
I have this expensive gizmo Zyxel-2000 WIFI  Wireless Phone that can run
SIP protocol. 
 
I have configured this to my Asterisk as a SIP client but cannot
register at the server.
 
I have a basic configuration entry in sip.conf  and I am running it
having the client connected 
with a Dynamic DHCP address. My Asterisk server is running fine and it
has several SIP and IAX2 clients. No problem there
 
I have used the following options in sip.conf as trial and error in
various combinations
 
nat=yes
host=dynamic
canreinvite=no
defaulthost=xx.xx.xx.xx
 
Asterisk sees the phone trying to connect but it cannot authenticate
with the Login/Pass
 
Does anyone have a working configuration for the Phone as well as
sip.conf entry? 
 
If not any suggestions
 
Thanks
 
Seshu Kanuri
Morgan Stanley | Technology
1633 Broadway | Floor 19
New York, NY 10019
Phone: +1 212 537-2849
seshu.kanuri at morganstanley.com <mailto:seshu.kanuri at morganstanley.com> 
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