I have following setup for a Call Centre.
I have Nortel Passport with E1 interface with Definity and in US end it is Passport with DS1 Links from MCI.
The Passport is configured with A-Law in definity end and in US end it is configured with A-law conversion (i.e A-law to Mu-law and viz).
The problem i am facing here is that If i configured my DS1 board with A-Law Interface companding i am unable to seize the channels. I am getting ambulance tone with following message in trace:-
denial event 1164: ISDN reject D2=DG/LOC/CV D1=0x87 D2=0x40141
If i configure the same with mu-law i am able to establish end to end call but with disturbing voice (crackling voice)
Iam made to understand that at US end the interface companding is mu-Law and hence when ISDN call setup is established it is with Mu-Law and at that instance if my DS1 board is a-Law the call will not establish.
The definity end passport is of E1 interface and can be configured for A-law only.
Can somebody help me in this:-
1. Can such setup works.
2. Can the ISDN setup message be of A-Law.
3. Why cant the Passport having E1 Interface configure for Mu-Law.
4. Any other way of configuring this setup.
All inputs will be appreciated.
Thanks
Jaikar
DS1 CIRCUIT PACK
Location: 01A09 Name: Mux
Bit Rate: 2.048 Line Coding: hdb3
Signaling Mode: isdn-pri
Connect: network
CentreVu Long Timers? n Country Protocol: 1
Interworking Message: PROGress Protocol Version: a
Interface Companding: alaw CRC? n
Idle Code: 11111111
DCP/Analog Bearer Capability: 3.1kHz
Slip Detection? y Near-end CSU Type: other
------------------------------------------------------------
SIGNALING GROUP
Group Number: 1
Associated Signaling? y Max number of NCA TSC: 0
Primary D-Channel: 01A0916
Max number of CA TSC:
Trunk Group for NCA TSC: 1
Trunk Group for Channel Selection: 1
Supplementary Service Protocol: a
------------------------------------------------------------
Trunk Group
Group Type : ISDN
Service Type: public-ntwrk
Supplementary Service Protocol: a
Numbering Format:
pub-unk
------------------------------------------------------------
LIST TRACE
time data
20:52:20 dial 02122206326#
20:52:20 route-pattern 1 preference 1 cid 0x2a5
20:52:20 seize trunk-group 1 member 1 cid 0x2a5
20:52:20 Setup digits 2122206326#
20:52:20 Calling Number & Name 91221133 EXT 1133
20:52:20 denial event 1164: ISDN reject D2=DG/LOC/CV D1=0x87 D2=0x40141
20:52:20 idle trunk-group 1 member 1 cid 0x2a5
20:52:24 idle station 1133 cid 0x2a5
I have Nortel Passport with E1 interface with Definity and in US end it is Passport with DS1 Links from MCI.
The Passport is configured with A-Law in definity end and in US end it is configured with A-law conversion (i.e A-law to Mu-law and viz).
The problem i am facing here is that If i configured my DS1 board with A-Law Interface companding i am unable to seize the channels. I am getting ambulance tone with following message in trace:-
denial event 1164: ISDN reject D2=DG/LOC/CV D1=0x87 D2=0x40141
If i configure the same with mu-law i am able to establish end to end call but with disturbing voice (crackling voice)
Iam made to understand that at US end the interface companding is mu-Law and hence when ISDN call setup is established it is with Mu-Law and at that instance if my DS1 board is a-Law the call will not establish.
The definity end passport is of E1 interface and can be configured for A-law only.
Can somebody help me in this:-
1. Can such setup works.
2. Can the ISDN setup message be of A-Law.
3. Why cant the Passport having E1 Interface configure for Mu-Law.
4. Any other way of configuring this setup.
All inputs will be appreciated.
Thanks
Jaikar
DS1 CIRCUIT PACK
Location: 01A09 Name: Mux
Bit Rate: 2.048 Line Coding: hdb3
Signaling Mode: isdn-pri
Connect: network
CentreVu Long Timers? n Country Protocol: 1
Interworking Message: PROGress Protocol Version: a
Interface Companding: alaw CRC? n
Idle Code: 11111111
DCP/Analog Bearer Capability: 3.1kHz
Slip Detection? y Near-end CSU Type: other
------------------------------------------------------------
SIGNALING GROUP
Group Number: 1
Associated Signaling? y Max number of NCA TSC: 0
Primary D-Channel: 01A0916
Max number of CA TSC:
Trunk Group for NCA TSC: 1
Trunk Group for Channel Selection: 1
Supplementary Service Protocol: a
------------------------------------------------------------
Trunk Group
Group Type : ISDN
Service Type: public-ntwrk
Supplementary Service Protocol: a
Numbering Format:
pub-unk
------------------------------------------------------------
LIST TRACE
time data
20:52:20 dial 02122206326#
20:52:20 route-pattern 1 preference 1 cid 0x2a5
20:52:20 seize trunk-group 1 member 1 cid 0x2a5
20:52:20 Setup digits 2122206326#
20:52:20 Calling Number & Name 91221133 EXT 1133
20:52:20 denial event 1164: ISDN reject D2=DG/LOC/CV D1=0x87 D2=0x40141
20:52:20 idle trunk-group 1 member 1 cid 0x2a5
20:52:24 idle station 1133 cid 0x2a5