IAX Real Time Failed

Hi Experts,

I have done the Static Configuration of my IAX.conf file with ast_config. But when I try to register my IAX extension. I am getting the following error. I am using Asterisk version 1.6.2.15.

[Feb 25 15:10:38] WARNING[22293]: pbx.c:4966 ast_context_remove_extension_callerid2: Cannot find extension 6001 in root_table in context iaxregistrations
[Feb 25 15:10:38] ERROR[22293]: chan_iax2.c:4732 handle_call_token: Call rejected, CallToken Support required. If unexpected, resolve by placing address xxx.xxx.xxx.xx in the calltokenoptional list or setting user 6001 requirecalltoken=no
[Feb 25 15:10:38] WARNING[22293]: pbx.c:4966 ast_context_remove_extension_callerid2: Cannot find extension 6001 in root_table in context iaxregistrations
[Feb 25 15:10:38] ERROR[22293]: chan_iax2.c:4732 handle_call_token: Call rejected, CallToken Support required. If unexpected, resolve by placing address xxx.xxx.xxx.xx in the calltokenoptional list or setting user 6001 requirecalltoken=no

I have done the following configuration

extconfig.conf

iax.conf => mysql,general,ast_config
iaxusers => mysql,general,iax_buddies
iaxpeers => mysql,general,iax_buddies

ast_config table
id cat_metric var_metric commented filename category var_name var_val comment zsection
4685 1 7 0 iax.conf general host dynamic
4686 1 8 0 iax.conf general qualify yes
12668 1 38 0 iax.conf general bindport 4569
12669 1 39 0 iax.conf general bindaddr 0.0.0.0
12671 1 41 0 iax.conf general nochecksums no
12672 1 42 0 iax.conf general delayreject yes
12673 1 43 0 iax.conf general amaflags default
12674 1 44 0 iax.conf general accountcode lss0101
12675 1 45 0 iax.conf general language en
12676 1 46 0 iax.conf general bandwidth low
12677 1 47 0 iax.conf general disallow all
12678 1 48 0 iax.conf general allow all alaw,ulaw,gsm,ilbc,g729
12679 1 49 0 iax.conf general jitterbuffer no
12680 1 50 0 iax.conf general forcejitterbuffer no
12681 1 51 0 iax.conf general maxjitterbuffer 1000
12682 1 52 0 iax.conf general resyncthreshold 1000
12683 1 53 0 iax.conf general trunkfreq 20
12684 1 54 0 iax.conf general trunktimestamps yes
12686 1 56 0 iax.conf general maxregexpire 60
12687 1 57 0 iax.conf general authdebug no
12689 1 59 0 iax.conf general mailboxdetail yes
12690 1 60 0 iax.conf general regcontext iaxregistrations
12691 1 61 0 iax.conf general autokill yes
12692 1 62 0 iax.conf general codecpriority host
12694 1 64 0 iax.conf general rtupdate yes
12695 1 65 0 iax.conf general rtautoclear yes
12696 1 66 0 iax.conf general rtignoreexpire yes
13888 1 67 0 iax.conf general requirecalltoken no
13889 1 68 1 iax.conf general calltokenoptional 0.0.0.0/0.0.0.0
13890 1 69 0 iax.conf general calltokenignore 202.131.xxx.xx

I have configure 6001 IAX extensions in iax_buddies.

Can you please help me how to resolve this issue.

Ketan