fax server - analog lines locking up

[fonchick]

We have been having an ongoing issue with analog lines on a fax server. We have four analog lines going into a fax server that are arranged in a linear hunt (the 4th port in the fax server hunts/forwards to a regular fax machine). These ports are configured as 500 ports in the PBX that have LDTA and FAXA in their class of service. However, about once every 1-2 days, these lines lock up where the first line in the group appears busy even though when tracing the call there is no one connected to the line. When this occurs, anyone faxing, receives a ring no answer and I have to manually disable and re-enable the line in order for it to become idle. What could resolve this? Here is an example of the first 2 500 ports of the server.

DES A1042
TN 020 0 14 07
TYPE 500
CDEN 4D
CUST 0
WRLS NO
DN 1172 0 MARP
CPND
NAME FAX SERVER 1
XPLN 18
DISPLAY_FMT FIRST,LAST
AST NO
IAPG 0
HUNT 3049
TGAR 1
LDN NO
NCOS 2
SGRP 0
RNPG 0
XLST
SCI 0
CLS CTD DTN FBD XFR WTA THFD FNA HTA ONS
LPR XRD AGRD CWD SWD MWD RMMD SMWD LPD XHD SLKD CCSD LND TVD
CFTD SFA C6D CNID CLBD AUTU
ICDD CDMD EHTD MCTD
GPUD DPUD CFXD ARHD OVDD AGTD CLTD LDTA ASCD
MBXD CPFA CPTA DDGA NAMA MIND
MCRD SHL ABDD CFHD
USRD BNRD OCBD RTDD RBDD RBHD FAXA PGND FTTC
RCO 0
PLEV 02
AACS NO
FTR FDN 3049
DATE 26 MAY 2004

DES 2ND
TN 020 0 14 05
TYPE 500
CDEN 4D
CUST 0
WRLS NO
DN 3049 0 MARP
CPND
NAME FAX server 2
XPLN 18
DISPLAY_FMT FIRST,LAST
AST NO
IAPG 0
HUNT 3048
TGAR 1
LDN NO
NCOS 2
SGRP 0
RNPG 0
XLST
SCI 0
CLS CTD DTN FBD XFR WTA THFD FNA HTA ONS
LPR XRD CWD SWD MWD RMMD SMWD LPD XHD SLKD CCSD LND TVD
CFTD SFA C6D CNID CLBD AUTU
ICDD CDMD EHTD MCTD
GPUD DPUD CFXD ARHD OVDD AGTD CLTD LDTA ASCD
MBXD CPFA CPTA DDGA NAMA MIND
MCRD SHL ABDD CFHD
USRD BNRD OCBD RTDD RBDD RBHD FAXA PGND FTTC
RCO 0
PLEV 02
AACS NO
FTR FDN 3048
DATE 26 MAY 2004

 

[johnpoole]

mcheck to see if the iao trunks are sup=no and ndec and fdec are eth.. usual for a station to hang when the trunk didn't see a remote diconect. yon might try to turn the jumper over to see if that might help. very seldom a problem, but i have seen it help.

john poole
bellsouth business
columbia,sc

 

[fonchick]

John,

These are DID trunks. I don't see these prompts that you are referring to on the trunk..

Thanks

 

[johnpoole]

are the did's pri, t1 or analog?

john poole
bellsouth business
columbia,sc

 

[fonchick]

They are PRI.

 

[johnpoole]

pri are the last thing i would expect to see a disco problem from, mon the dch and see if your getting a page form the dch on disconect. if it's just the fax machines, they, being analog, are using a set of timers for signals to/from the switch. you may shorten your flash timers, if the switch sees the disco as a flash it can hang.

john poole
bellsouth business
columbia,sc

 

[wdhb]

1st, I'd set WTA to WTD, not that this has anyhting to do with your issue. You could try changing the LDTT time in LD15. These problems are usually an integration issue between the PBX & Fax Server. Can you change settings in the Fax Server. You will probably need to experiment. I needed to change LDTT to 10s for Dictation service using Dialogic cards