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ATA 187 Fax is failing with CUCM 8.5 & 3925 SIP Gateway.

ashbandhujha
Level 1
Level 1

Dear All,

Here is the call flow for failed fax :

ATA 187---------- CUCM 8.5 ----------3925 SIP Gateway------------ Huawei softx3000 SIP provider

FAX mode is ATA is Fax pass through.

Fax is failing with strange RTP payload Type Behaviour.

RTP pt vary from 97 ,101 ,127 etc.

   

attached debug file.          

18 Replies 18

Dear Aokanlawon,

1.fax machine is connected to ATA 187.

2.Analog phone can make call connected to ATA 187.

3.SIP Gateway is CUBE.

4.ATA configured for fax-passthrough.

5.ATA 187 is having firmware 9.2.3

I have done following :

1.ATA fax mode is fax-passthrough.

2.done

3.done

4.region is defined in call manager as: can not change the codec.

region               max audio                      max video

REG-AQSHO   64kbps (g.722 ,g.711)          384

5.ATA is having latest 9.2.3.

6.on the sip dial-peer codec is configured as g711alaw.telephone call is going. with this

if i change it to g711ulaw then call is not going.

7. vtsp debug is for port.

      

i will send debug once remote guy will be available for fax testing.

Thank you

Can you send updated gateway config? IS region-aqsho assigned to gateway and ATA?

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Dear Aokanlawon,

yes region aqsho is assignd to  the same device pool which is in sip gateway and ATA.

Calling number :2279107

called number : 2833373

I said you should remove "fax protocol pass-through g711ulaw" from all your dial-peers

configure

voice service voip
no fax protocol pass-through g711ulaw

fax protocol none

I still see this in your configs...

Please remove and try again

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