I traied to send FAX IP to IP, from Central Site to Remote Office, but unsuccessful. I have error on sending site (Central Ofiice) Tx Canceled - Error 0091. First Fax is connected on port1 Cisco ATA186 on Central Site. I have Remote Office connected with WAN link to Central Site. Fax at the Remote Office is also connected on first port ATA 186. On CallMAnager 4.1.3 I have defined Device Pool DP_FAX with Region G.711 within region. For FAX machine on Central and Remote Site , I have defined same Device Pool. All communication between FAX machines on Central and Remote Site is trough G.711 codec.

I capture debug information from both ATA 186 with prserv.exe:

At the Central Site(SENDING SIDE), Point of problem:

[1]MPT mode 3

[1]speed up@40170400->40170560, 40170000->40170080, bc 8, td 0, df 1

97:30;6,6,0,0,

<-|EndCall[1]

<-|SK[1]:9, L=1, FGR=340ea17

[1]StopTone

->CloseRxChn[1]

|->StopMediaTx[1]

|->CallState[1]=2 L=1 R=340ea17 FG=0 r=340ea17,0

IDLE[1]

|->SetRingerMode[1]:1

98:00;6,6,0,0,

At the REMOTE FAX (RECEIVING SIDE), output is in atachment problem beggin after [1]MPT mode 3.

Can anybody help.