Hi all!

There was a problem with a fax assurance of receipt. According to the standard t.38 after fax reception message MCF should go, however Cisco AS5400xm it does not send. Because of it softswitch MERA does not confirm fax reception.

What problem may be?

!

dial-peer voice 87626700 voip

answer-address 8762670.

destination-pattern 8762670.

session protocol sipv2

session target ipv4:x.x.x.x

dtmf-relay rtp-nte

codec g711alaw

fax-relay ecm disable

fax rate 9600

fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback none

no vad

!

dial-peer voice 2000 pots

destination-pattern 2017

progress_ind setup enable 3

progress_ind alert enable 8

no digit-strip

direct-inward-dial

port 5/0:D

Mar 19 10:06:02.998: 5/0:D (531) 562683315 fr-entered (20ms)

Mar 19 10:06:24.574: 5/0:D (531) 562855972 state_code: fr-msg-det V21, t30_msg: NSF

Mar 19 10:06:25.318: 5/0:D (531) 562861941 state_code: fr-msg-det V21, t30_msg: CSI

Mar 19 10:06:25.690: 5/0:D (531) 562864929 state_code: fr-msg-det V21, t30_msg: DIS

Mar 19 10:06:27.334: 5/0:D (531) 562878087 state_code: fr-msg-tx V21, t30_msg: TSI

Mar 19 10:06:27.546: 5/0:D (531) 562879757 state_code: fr-msg-tx V21, t30_msg: DCS

Mar 19 10:06:32.262: 5/0:D (531) 562917546 state_code: fr-msg-det V21, t30_msg: CFR

Mar 19 10:08:09.210: FAX_RELAY_DET_STATUS_CHANGE: slot: 3 port: 101 detector mask 0x2

Mar 19 10:08:10.106: 5/0:D (531) 563700610 fr-end