FaxBack NET SatisFAXtion 8.7 (Including R3) - Manual User Manual
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4 – Appendices
NET SatisFAXtion 8.7 Manual
176
not receive the MCF and attempted to resend it twice more. After the third fail-
ure to respond, IPFax terminated the call. This can be caused by the remote de-
vice hanging up without notifying the TDM network (POTS lines lack such
notification), line impairment such that the gateway could not detect and en-
code the MCF command, line noise such that our MPS was not detected by the
remote device, or packet loss such that either the MPS or the response MCF
was lost, or latency such that the MCF or MPS was delayed. In the case of
packet loss, insure that low-speed redundancy is enabled. Error type:
RETRYABLE
.
27991 Invalid response after end-of-page:
After sending the end of page
command to the remote, the remote should have sent a MCF, PIP, RTP, PIN, or
RTN response. It sent something else. Error type:
RETRYABLE
.
27992 Receiver sent DCN:
Normally, the receiver should never send a DCN
disconnect signal. This could be due to line impairment causing a timeout on the
receive side, or a user manually pressing a cancel button on the receiving fax
machine. Error type:
RETRYABLE
.
27993 Remote device does not support fax:
The remote modem indicated it
is not capable of faxing. Error type:
NON_RETRYABLE
.
27994 Invalid response to
ECM block: The valid responses from the remote
following the transmission of an ECM block should be RNR, PPR or MCF. Some
other signal was received. Error type:
NON_RETRYABLE
.
27995 Remote fax not ready for next page:
The T5 timeout (60 seconds ±
5 seconds) occurred while exchanging RR and RNR signals for an ECM send.
Error type:
RETRYABLE
.
27996 No response to
ECM end-of-page: The sender had received a RNR
at which time it responds with an RR signal. It then expects the remote to send
either a RNR or an MCF within T4 seconds. There was no response received.
Error type:
RETRYABLE
.
27997 No more baud rates to try:
After a 4th ppr signal is received, a CTC
signal is sent so as to step down the baud to the next configured baud rate. All
configured baud rates have been exhausted. Error type:
RETRYABLE
.
27998 No response to CTC:
No response after CTC. Error type:
RETRYABLE
.
27999 Invalid response to CTC:
The expected signal after CTC is CTR. Some
other signal was received. Error type:
RETRYABLE
.
28000 Invalid response after
ECM block: After receiving an ECM block, the
expected signals are PPS, CTC or RR. Some other signal was received. Error
type:
NON_RETRYABLE
.
28001 Unexpected DCN:
During receive, a DCN signal was received at a
point where it is not expected. This most commonly occurs under ECM. For
non-ECM faxes, a DCN received after page data does not generate an error
since some fax machines don’t bother with a post page signal on the last page.
Error type:
NON_RETRYABLE
.