[Asterisk-Users] Cisco AS5XXX to asterisk debugging.

[Jorge Verastegui G]

Hi, 

I have a serious problem to configure Cisco AS5XXX and Asterisk , 

I trying to use asterisk for 

PSTN(A)----> Cisco AS5xxx ----> ASterisk---->PSTN(B) 

(No Nat, no Firewall)

I hear (on the PSTN(A)) clearly what the other person is saying, but the
other person (on the PSTN(B) side) hears nothing from PSTN(A).

I use tcpdump for debug de rtp trafic, and ouput contains 


19:06:00.741293 IP (tos 0x0, ttl  64, id 179, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32
19:06:00.763133 IP (tos 0x0, ttl  64, id 179, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32
19:06:00.740415 IP (tos 0x0, ttl  64, id 179, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32
19:06:00.810312 IP (tos 0x0, ttl  64, id 179, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32
19:06:00.860314 IP (tos 0x0, ttl  64, id 179, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32
19:06:00.980351 IP (tos 0x0, ttl  64, id 180, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32
19:06:01.000313 IP (tos 0x0, ttl  64, id 181, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32
19:06:01.014822 IP (tos 0x68, ttl 255, id 1, offset 0, flags [none], proto 17, length: 164) y.y.y.y.18975 > x.x.x.x.19927: UDP, length 136
19:06:01.020312 IP (tos 0x0, ttl  64, id 182, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32
19:06:01.040302 IP (tos 0x0, ttl  64, id 183, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32
19:06:01.060343 IP (tos 0x0, ttl  64, id 184, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32
19:06:01.083311 IP (tos 0x0, ttl  64, id 179, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32
19:06:01.128314 IP (tos 0x0, ttl  64, id 179, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32
19:06:01.130316 IP (tos 0x0, ttl  64, id 179, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32
19:06:01.165318 IP (tos 0x0, ttl  64, id 179, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32
19:06:01.186312 IP (tos 0x0, ttl  64, id 179, offset 0, flags [DF], proto 17, length: 60) x.x.x.x.19926 > y.y.y.y.18974: [no cksum] UDP, length 32


Where

 x.x.x.x = ip address of Astersik 
 y.y.y.y = ip address of Cisco


Two types of codecs were proven ( ulow, g729 ).

When use the Asterisk with Sip phones everything works well.
 
        SipPhone------>Asterisk------->PSTN(B)     

The configurations, are the usual ones (from the wiki). the version of asterisk is 1.0.3, the linux is  FC2.


Please help me.  

-- 
Jorge Verastegui G <jorge at redcetus.com>
RedCetus S.R.L.