[Asterisk-Users] Asterisk 1.0.3 Sipura codec error

[Sharon]

Hello,
            We are using Asterisk-1.0.3 version. Grandstream works
fine with this version. When trying to use a Sipura 2000 we the 488
error and also Answering with non-codec capability 0x1
(telephone-event) message.
also in the sip show peer for Sipura
 Codecs       : 0x0 (nothing)
  Codec Order  : (none)
  Status       : UNKNOWN



sip looks as below:
[general]
port = 5060                     ; Port to bind to
bindaddr = 0.0.0.0              ; Address to bind SIP channel to
context = invalid                     ; Default context for incoming calls
disallow=all
allow=ilbc
allow=ulaw
;allow=gsm
;allow=g729
canreinvite=no
nat=yes
insecure=very
cache_mysql_entries=yes
maxexpirey=15
defaultexpirey=15
dtmfmode=rfc2833

any help appreciated
Thank you,