[asterisk-users] ATA status intermittent

[marcelo ferreira]

Hello,
im having trouble with the following:

[Asterisk]<------>[ISP]<------>[ADSL Modem]<------>[Linksys Router]<------>[Grandstream ATA]<------>[Analog Phone]

On server:
- Asterisk 1.6
- A2Billing 1.4

A2Billing have 2 Trunks:

- TrExt: Voip Provider
- TrInt: Internal Calls

This structure works on first day (Asterisk+A2Billing installation/configuration).

But on next day, i found a registration trouble in ATA:
It (ata) can not be reached by asterisk (to receive internal call), but it can made OUTBOUND calls (via SIP Prov.)

Anyone knows if there is a NAT problem?

Following my configuration:

1 - PROBLEMATIC SIP PEER (Configured on ATA) ##############################################################
    [6000]
    Accountcode=6000
    Regexten=6000
    amaflags=billing
    Callerid=6000
    canreinvite=yes
    context=a2billing
    dtmfmode=RFC2833
    host=dynamic
    nat=yes
    qualify=yes
    secret=1873
    type=friend
    Username=6000
    disallow=all
    allow=gsm
    allow=g729
    allow=ulaw
    allow=alaw
    regseconds=0
    cancallforward=yes
    cid_number=6000

2 - A2Billing LOG Lines ##################################################################################

        -- AGI Script Executing Application: (DIAL) Options: (SIP/6000,60,HRrL(5400000:61000:30000)f)
      == Using SIP RTP CoS mark 5
    [Apr  6 18:35:25] WARNING[13210]: app_dial.c:1745 dial_exec_full: Unable to create channel of type 'SIP' (cause 20 - Unknown)
      == Everyone is busy/congested at this time (1:0/0/1)
        -- Playing 'prepaid-dest-unreachable' (escape_digits=#) (sample_offset 0)
        -- <SIP/35419-00000172>AGI Script a2billing.php completed, returning -1
        -- Executing [h at a2billing:1] NoOp("SIP/35419-00000172", "HANGUPCAUSE-> 20") in new stack
        -- Executing [h at a2billing:2] Hangup("SIP/35419-00000172", "") in new stack
      == Spawn extension (a2billing, h, 2) exited non-zero on 'SIP/35419-00000172'

3 - SIP SHOW PEERS ##############################################################################
    ip-208-109-104-119*CLI> sip show peers
    Name/username              Host            Dyn Nat ACL Port     Status
    6000/6000                  (Unspecified)    D   N      5060     UNKNOWN

4 - SIP SHOW PEER 6000 ###########################################################################
      * Name       : 6000I>
      Secret       : <Set>>
      MD5Secret    : <Not set>
      Remote Secret: <Not set>
      Context      : a2billing
      Subscr.Cont. : <Not set>
      Language     : 9*CLI>
      Accountcode  : 6000I>
      AMA flags    : BILLING
      Transfer mode: openI>
      CallingPres  : Presentation Allowed, Not Screened
      Callgroup    : 9*CLI>
      Pickupgroup  : 9*CLI>
      Mailbox      : 9*CLI>
      VM Extension : asterisk
      LastMsgsSent : 32767/65535
      Call limit   : 0*CLI>
      Dynamic      : YesLI>
      Callerid     : "" <6000>
      MaxCallBR    : 384 kbps
      Expire       : -1CLI>
      Insecure     : noCLI>
      Nat          : Always
      ACL          : NoCLI>
      T.38 support : NoCLI>
      T.38 EC mode : Unknown
      T.38 MaxDtgrm: -1CLI>
      DirectMedia  : YesLI>
      PromiscRedir : NoCLI>
      User=Phone   : NoCLI>
      Video Support: NoCLI>
      Text Support : NoCLI>
      Ign SDP ver  : NoCLI>
      Trust RPID   : NoCLI>
      Send RPID    : NoCLI>
      Subscriptions: YesLI>
      Overlap dial : YesLI>
      DTMFmode     : rfc2833
      Timer T1     : 500LI>
      Timer B      : 32000>
      ToHost       : 9*CLI>
      Addr->IP     : (Unspecified) Port 5060
      Defaddr->IP  : 0.0.0.0 Port 5060
      Prim.Transp. : UDPLI>
      Allowed.Trsp : UDPLI>
      Def. Username: 6000I>
      SIP Options  : (none)
      Codecs       : 0x10e (gsm|ulaw|alaw|g729)
      Codec Order  : (gsm:20,g729:20,ulaw:20,alaw:20)
      Auto-Framing :  No I>
      100 on REG   : NoCLI>
      Status       : UNKNOWN
      Useragent    : 9*CLI>
      Reg. Contact : 9*CLI>
      Qualify Freq : 60000 ms
      Sess-Timers  : Accept
      Sess-Refresh : uasLI>
      Sess-Expires : 1800 secs
      Min-Sess     : 90 secs
      Parkinglot   : 9*CLI>


--------------------------------------------

Weel, from this point to ahead, the problem appears to be intermittent.
In a moment its owrking. In a couple minutes (or hours), the ATA seems to be down (Unreacheable)

But OUTBOUND calls are always perfect.

Anyone knows something about this kind of problem?

Marcelo Amorim Ferreira
[<O>] Brasil

 		 	   		  
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