[Asterisk-Users] PRI DMS100 -> Nortel Meridian Option 81

[Greg Camp]

Hello all,

I have Asterisk 1.2.1 and a TE110P connected to a Nortel Meridian Option
81C system.  The PRI line is currently setup as DMS100.  Here are the
relevant lines from zaptel.conf and zapata.conf:

zaptel.conf:
span=1,1,0,esf,b8zs
bchan=1-23
dchan=24
loadzone        = us
defaultzone     = us

zapata.conf:
[channels]

language=en
context=from-internal
musiconhold=default
switchtype=dms100
resetinterval=72000
signalling=pri_net
channel=>1-23

The Asterisk box will see the call setup message, but according to the
d-channel trace (below) a RELEASE(77) message happens shortly after the
CALL PROCEEDING(2) message.  The effect is that calls between the two
systems do not happen.

Can someone versed in d-channel messages determine what is going on
here?  Also, is there any way to tell the Zaptel card to emulate a
particular release version for DMS100?  I believe the Meridian is
expecting Release 36, or something like that (we've tried leaving
Release ID blank on the Meridian side with the same results).

< Protocol Discriminator: Q.931 (8)  len=42
< Call Ref: len= 1 (reference 20/0x14) (Originator)
< Message type: SETUP (5)
< [04 03 80 90 a2]
< Bearer Capability (len= 5) [ Ext: 1  Q.931 Std: 0  Info transfer
capability: Speech (0)
<                              Ext: 1  Trans mode/rate: 64kbps,
circuit-mode (16)
<                              Ext: 1  User information layer 1: u-Law
(34)
< [18 04 e9 80 83 14]
< Channel ID (len= 6) [ Ext: 1  IntID: Explicit, PRI Spare: 0, Exclusive
Dchan: 0
<                        ChanSel: Reserved
<                       Ext: 1  DS1 Identifier: 0
<                       Ext: 1  Coding: 0   Number Specified   Channel
Type: 3
<                       Ext: 0  Channel: 20 ]
< [28 0a b1 47 52 45 47 20 43 41 4d 50]
< Display (len=10) Charset: 31 [ GREG CAMP ]
< [6c 06 09 80 34 32 32 34]
< Calling Number (len= 8) [ Ext: 0  TON: Unknown Number Type (0)  NPI:
Private Numbering Plan (9)
<                           Presentation: Presentation permitted, user
number not screened (0) '4224' ]
< [70 05 e9 34 39 39 31]
< Called Number (len= 7) [ Ext: 1  TON: Abbreviated number (6)  NPI:
Private Numbering Plan (9) '4991' ]
-- Making new call for cr 20
-- Processing Q.931 Call Setup
-- Processing IE 4 (cs0, Bearer Capability)
-- Processing IE 24 (cs0, Channel Identification)
-- Processing IE 40 (cs0, Display)
-- Processing IE 108 (cs0, Calling Party Number)
-- Processing IE 112 (cs0, Called Party Number)
> Protocol Discriminator: Q.931 (8)  len=10
> Call Ref: len= 2 (reference 20/0x14) (Terminator)
> Message type: CALL PROCEEDING (2)
> [18 03 a9 83 94]
> Channel ID (len= 5) [ Ext: 1  IntID: Implicit, PRI Spare: 0, Exclusive
Dchan: 0
>                        ChanSel: Reserved
>                       Ext: 1  Coding: 0   Number Specified   Channel
Type: 3
>                       Ext: 1  Channel: 20 ]
    -- Accepting call from '4224' to '4991' on channel 0/20, span 1
< Protocol Discriminator: Q.931 (8)  len=8
< Call Ref: len= 1 (reference 20/0x14) (Originator)
< Message type: RELEASE (77)
< [08 02 81 e4]
< Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0) 0: 0
Location: Private network serving the local user (1)
<                  Ext: 1  Cause: Unknown (100), class = Protocol Error
(6) ]
-- Processing IE 8 (cs0, Cause)
    -- Channel 0/20, span 1 got hangup
    -- Executing Macro("Zap/20-1", "exten-vm|novm|4991") in new stack
    -- Executing Macro("Zap/20-1", "user-callerid") in new stack
    -- Executing DBget("Zap/20-1", "AMPUSER=DEVICE/4224/user") in new
stack
    -- DBget: varname=AMPUSER, family=DEVICE, key=4224/user
    -- DBget: Value not found in database.
    -- Executing Macro("Zap/20-1", "hangupcall") in new stack
    -- Executing ResetCDR("Zap/20-1", "w") in new stack
    -- Executing NoCDR("Zap/20-1", "") in new stack
    -- Executing Wait("Zap/20-1", "5") in new stack
  == Spawn extension (macro-hangupcall, s, 3) exited non-zero on
'Zap/20-1' in macro 'hangupcall'
  == Spawn extension (from-internal, h, 1) exited non-zero on 'Zap/20-1'
NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Null, peerstate Release
Request
> Protocol Discriminator: Q.931 (8)  len=9
> Call Ref: len= 2 (reference 20/0x14) (Terminator)
> Message type: RELEASE COMPLETE (90)
> [08 02 81 90]
> Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0) 0: 0
Location: Private network serving the local user (1)
>                  Ext: 1  Cause: Unknown (16), class = Normal Event (1)
]
NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Null, peerstate Null
NEW_HANGUP DEBUG: Destroying the call, ourstate Null, peerstate Null
    -- Hungup 'Zap/20-1'

Thanks,

Greg
Greg.Camp at ExcellSvcs.com
Excell Services