No Busy Tone o PRI Call

[fallenangel1]

I have a PRI Link with ZTE on which almost everything going smooth other then Busy Tone. When I dial a busy user, I am unable to hear busy tone, just an infinite silence is what I hear. I get this message on my D-Channel:

*********

DCH 12 UIPE_OMSG CC_SETUP_REQ REF 00001B69 CH 12 26 TOD 11:35:56 CK 308AC3C5
PROGRESS: ORIGINATING END IS NOT ISDN
CALLING #:5811829393 NUM PLAN: E164 TON: NATL
CALLED #:0519271536 NUM PLAN: E164 TON: UNKNOWN

DCH 12 UIPE_IMSG CC_MORE_INFO_IND REF 00001B69 CH 12 26 TOD 11:35:56 CK 308AC48
6

DCH 12 UIPE_OMSG CC_INFO_REQ REF 00001B69 CH 12 26 TOD 11:35:56 CK 308AC487

DCH 12 UIPE_IMSG CC_DISC_IND REF 00001B69 CH 12 26 TOD 11:35:56 CK 308AC819
CAUSE: #17 - USER BUSY
PROGRESS: INBAND INFO OR PATTERN IS AVAIL

DCH 12 UIPE_OMSG CC_RELEASE_REQ REF 00001B68 CH 12 27 TOD 11:36:00 CK 308AE5C8
CAUSE: #16 - NORMAL CALL CLEARING

DCH 12 UIPE_IMSG CC_RELEASE_CONF REF 00001B68 CH 12 27 TOD 11:36:00 CK 308AE61
0

***********


Route Print is given as under:


ld 21
PT1000

REQ: prt
TYPE: rdb
CUST 0
ROUT 12
TYPE RDB
CUST 00
ROUT 12
DES
TKTP DID
TW_ROUTE NO
NPID_TBL_NUM 0
SAT NO
RCLS EXT
VTRK NO
NODE
DTRK YES
BRIP NO
DGTP PRI2
ISDN YES
MODE PRA
IFC EURO
CNTY ETSI
SBN NO
PNI 00000
NCNA NO
NCRD NO
ISAR NO
CPFXS YES
SDID NO
DAPC NO
INTC NO
MBXR NO
DSEL VOD
PTYP DCO
AUTO NO
DNIS NO
DCDR NO
ICOG IAO
RANX NO
SRCH LIN
TRMB YES
STEP
ACOD 0
TCPP NO
TARG 11
CLEN 1
BILN YES
BLEN 10
BNUM 0000000002
BDSP NO
OABS
INST
MFC NO
ICIS YES
OGIS YES
PTUT 0
TIMR ICF 512
OGF 512
EOD 13952
NRD 10112
DDL 70
ODT 4096
RGV 640
FLH 510
GTO 896
GTI 896
SFB 3


PAGE 002

NBS 2048
NBL 4096

IENB 5
VSS 0
VGD 6
DTD NO
SCDT NO
2 DT NO
DDO NO
DRNG NO
CDR YES
INC YES
LAST YES
QREC YES
OAL YES
AIA YES
OAN YES
OPD YES
NDP EXC 0
CDRX YES
NATL YES
SSL
CFWR NO
IDOP NO
VRAT NO
MUS NO
MR NO
PANS YES
EQAR NO
FRL 0 0
FRL 1 1
FRL 2 2
FRL 3 3
FRL 4 4
FRL 5 5
FRL 6 6
FRL 7 7
OHQ NO
OHQT 00
TDET NO
TTBL 0
ATAN NO
PLEV 2
OPR NO
PRDL NO
EOS NO
DNSZ 0
RCAL NO
MCTS NO
ALRM NO
BTT 30
ACKW NO
ART 0
PECL NO
DCTI 0
TIDY 770 12
SGRP 0
ARDN NO
AACR NO
***************

LD 20 Print is here:

TYPE: did
TN 12 1
DATE
PAGE

DES
TN 012 01 VIRTUAL
TYPE DID
CDEN SD
CUST 0
TRK PRI2
PDCA 1
PCML A
NCOS 0
RTMB 12 1
B-CHANNEL SIGNALING
NITE
AST NO
IAPG 0
CLS UNR DIP CND ECD WTA LPR APN THFD SPCD
P10 VNL
TKID
DTCR NO
AACR NO
DATE 3 JUL 2010


NACT

************

I had to configure DID because other side was not proceeding my few of mobile calls on TIE. Is there any suggestion? I am stuck in this problem.

 

[SL1User]

What about the DCH programming?
Did you set the outgoing T306?
I think you forgot to set this timer because the two following release messages come immediately after the disconnect (4 sec)

I would recomment to set it to OUT_T306 = 20, INC_T306 = 0

Then you should hear the busy tone of your provider.

DCH 12 UIPE_IMSG CC_DISC_IND REF 00001B69 CH 12 26 TOD 11:35:56 CK 308AC819
CAUSE: #17 - USER BUSY
PROGRESS: INBAND INFO OR PATTERN IS AVAIL <- This tells you that there is a tone provided by the PSTN

 

[fallenangel1]

Well I tried changing Protocol to ESGF with TIE trunk type. Got busy tone but my NWD calls (other then mobile) were getting diconnected right after dialing. I then tried ESGF with DID. Things got perfect.

What I noticed is that while on EURO protocol, there was a 30 second delay between Call Disconnect notification and Channel Release message. ESGF, on other hand, made it disconnected right after DISC notification.

The timers subect is very important I thin yet. Can somebody please guide me more on CS1KE Timers?

 

[fallenangel1]

Interesting facts I noticed. While changing protocols, I realized that if I get busy tone on one protocol, ZTE starts receiving 0 with my 1XXX calls on network. If one protocol enables my 1XXX calls, it simultaneously disables my busy tone on network call.

I then tried T306 timers and they worked, however, I get the Dial Tone on call clearing. Now trying to change TLP in LD 56 so that I can provide busy tone or at least a tone somewhat similar to busy tone to my users. Opened another topic for that. Looking forward for help as I am badly stuck in this issue.