Ronnie Jones wrote:
I am setting up an asterisk box , my first with PRI T1 interface to a
Nortel 61C. We have quite a bit of experience with the 61C and do most
of the programming including maintaining several other PRI interfaces in
this switch. The problem we are having is as soon as we turn up the
PRI, on the 61C side we get PRI0264 protocol errors. Then the circuit
lays down properly. At this point we start accumulating SLIPR in the
61C which resets the circuit in about 5 minutes. Below are my
configurations.
Nortel 61C
CEQU
MPED 8D
TERM
REMO
TERD
REMD
TERQ
REMQ
SUPL 004 012 024 V048
N156
SUPC
SUPF
XCT 000 016
TDS * 000 * 016
CONF * 001 * 017
MFSD * 000 * 016
DLOP NUM DCH FRM TMDI LCMT YALM TRSH
TRK 009 12 ESF NO B8S FDL 00
PRI 008 24 ESF NO B8S FDL 00
010 24 ESF NO B8S FDL 00
011 24 ESF NO B8S FDL 00
018 24 ESF NO B8S FDL 00
019 24 ESF NO B8S FDL 00
020 24 ESF NO B8S FDL 00
021 24 ESF NO B8S FDL 00
030 24 ESF NO B8S FDL 00
031 24 ESF NO B8S FDL 00
Blah..blah
ADAN DCH 50
CTYP MSDL
DNUM 10
PORT 1
DES ippbx
USR PRI
DCHL 8
OTBF 32
PARM RS422 DTE
DRAT 64KC
CLOK EXT
IFC ESS5
SIDE USR
CNEG 1
RLS ID 1
RCAP ND2
MBGA NO
OVLR NO
OVLS NO
T200 3
T203 10
N200 3
N201 260
K 7
TYPE RDB
CUST 00
ROUT 97
DES IPPBX
TKTP TIE
NPID_TBL_NUM 0
ESN NO
CNVT NO
SAT NO
RCLS INT
VTRK NO
DTRK YES
BRIP NO
DGTP PRI
ISDN YES
MODE PRA
IFC ESS5
SBN NO
PNI 00001
SRVC NNSF
NCNA YES
NCRD YES
CHTY BCH
CTYP UKWN
INAC YES
ISAR NO
CPUB OFF
DAPC NO
BCOT 0
DSEL VOD
PTYP PRI
AUTO NO
DNIS NO
DCDR NO
ICOG IAO
SRCH LIN
TRMB YES
STEP
ACOD 7997
TCPP NO
PII NO
TARG
CLEN 1
BILN NO
OABS
INST
IDC NO
DCNO 0 *
NDNO 0
DEXT NO
ANTK
SIGO STD
ICIS YES
TIMR ICF 512
OGF 512
EOD 13952
NRD 10112
DDL 70
ODT 4096
RGV 640
GRD 896
SFB 3
NBS 2048
PAGE 002
NBL 4096
IENB 5
TFD 0
VSS 0
VGD 6
DRNG NO
CDR NO
VRAT NO
MUS NO
RACD NO
FRL 0 0
FRL 1 0
FRL 2 0
FRL 3 0
FRL 4 0
FRL 5 0
FRL 6 0
FRL 7 0
OHQ NO
OHQT 00
CBQ NO
AUTH NO
TDET NO
TTBL 0
ATAN NO
PLEV 2
ALRM NO
ART 0
SGRP 0
AACR NO
zapata.conf
[trunkgroups]
[channels]
language=en
context=default
switchtype=5ess
signalling=pri_net
usecallerid=yes
echocancel=yes
echocancelwhenbridged=yes
rxgain=0.0
txgain=0.0
musiconhold=default
group = 1
channel = 1-23
zaptel.conf
span = 1,1,0,esf,b8zs
bchan=1-23
dchan=24
loadzone = us
defaultzone=us
I think the configuration is right. I have tried changing the timimg
source in zaptel.conf from 1 to 0 to no avail. Also I can not set up
the Nortel PRI to look internal for clock. Nortel sets up by default
CLOK = EXT. I have tried different cross over cables. I can point the
asterisk into a T-Berd 950N set up to turn up a PRI and it will work and
run clean on the Asterisk server. I can loop back the Nortel PRI and it
will ‘est wrong mode’ and accumulate no SLIPR. I am struggling to get
this to work. The circuit does establish and pass calls but resets
frequently due to slips. Dell 2850/TE110P/Asterisk business edition
ABE-B.1-1/Redhat EL4/Nortel 61C/Succession R3/MSDL Dchannel/NT5D12. Any
help would be appreciated.
I have no experience on the Nortel side, but will comment on the timing
thingie.
The asterisk T1 card (port going to the Nortel) will always generate T1
timing on the transmit side of the T1. There is no way to turn it off
(by T1 Spec's). So, letting the Nortel use CLOK = EXT is perfect.
The sync parameter in /etc/zaptel.conf for that same T1 port should
probably be set to zero, but that statement is somewhat dependent on
what the other ports on the Asterisk T1 card are used for. If there are
no other Asterisk T1 card ports in use, then I'd suggest setting the
sync parameter to "1". If at least one other Asterisk T1 port is in use
and goes to a central office, then turn that port's sync to "1" and the
Nortel port sync to "0". (Keep in mind the digium T1 cards only have one
clock on board, and syncing that clock to a T1 coming from a central
office is the right thing to do. Once that clock is in sync, then the
Nortel will sync to asterisk.)
I'm a little confused with your last paragraph when you say "the circuit
does establish and pass calls but resets frequently due to slips". Are
those calls to/from asterisk talking to the Nortel? Or, are you routing
incoming pstn calls from the central office through asterisk to the Nortel?
Also, have you tried any of the "pri show ..." commands in asterisk, or
any of the pri debug items?
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --
asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
