[Asterisk-Users] Communication between 2 UA

[Hashimoto]

Hello all

I setup the Asterisk without Line Card.
But UA could not speak each other.
Error log was as follow

Asterisk Ready.
WARNING[5126]: File chan_sip.c, Line 444 (retrans_pkt): Maximum retries 
exceeded on call 5b5b1f1a2d21623450ba083b22d62612 at 192.168.0.100 for 
seqno 102 (Request)

Please give us suggestion to communicate each UA.

config as follow

Asterisk IP address:192.168.0.100
extensions.conf
 [sip]
exten => 1001,1,Dial(SIP/1001,5)
exten => 1001,2.Voicemail(u1001)
exten => 1001,102.Voicemail(b1001)
exten => 1001,103,Hangup

exten => 1002,1,Dial(SIP/1002,6)
exten => 1002,2.Voicemail(u1002)
exten => 1002,102.Voicemail(b1002)
exten => 1002,103,Hangup

sip.conf
;
[general]
port = 5060                   
bindaddr = 0.0.0.0           
context = sip                   
;srvlookup = yes               
;pedantic = yes                
Pingtel
;tos=lowdelay
;tos=184
;maxexpirey=3600                
;defaultexpirey=120

[1001]
type=friend
username=1001
secret=secret
host=dynamic
mailbox=1001
context=sip


[1002]
type=friend
username=1002
secret=secret
host=dynamic
mailbox=1002
context=sip