Random failed call IP Networking BC12

[allneo01]

Hi All,

i have a question about a technical problem regarding IP Networking (VoIP) on a MD110 system that is under my control.

In particular i have more system connected together with ELU32 (ROF1375428/1 R6A) interfaces with software level BC12SP11.
During a test call between the systems i found that sometimes (after some calls) the call fails;
testing from an analog or a digital device we hear no signal (mute) and the CTCOP/CTDEI command says "NO_CONN".
This problem happens after some positive calls (random).

I try also on to connect a spare system (configured using the backup of one of the remote system -so a copy of one of my production one-) with one of my site to made some isolated tests (between one production machine and the test one);
i found that the calls coming from the test environment doesn't have this behavior but the calls coming from the production environment to the test one still have this random fails.
I also try to monitor the network activity (using ethereal) of the ELU32 and i found that during the failed calls i doesn't have any network activity.
Does anyone saw a problem like this or do you have some suggestion about this behavior?
Tanks all

 

[LeeMason]

What sort of network do you have the phones plugged into. Are you using QoS (ToS) or separate VLAN for the phones, etc?


Lee Mason
Optimal Projects Ltd

http://www.opl.co.uk

http://www.backupsanywhere.com

 

[allneo01]

We have a gigabit infrastructure with QoS/ToS voice handling (based on dscp) the voice is class5; but the same problem occurs when the system are connected trough an isolated network connectivity (end to end between ELU32).
Tanks

 

[whosrdaddy]

what type of phones do you have, and what is their firmware?

please provide :

IPERP;
CNBIP:BRDID=114,LIM=ALL;

//Daddy

-----------------------------------------------------
What You See Is What You Get
Never underestimate tha powah of tha google!

 

[allneo01]

<iperp;
WAIT
IP EXTENSION REVISION DATA
DIR REVISION IP TERMINAL
5599 R2B/R4F/R4A DBC42501
5601 1.0 Ericsson iPhone
5602 1.0 Ericsson iPhone
5603 1.0 Ericsson iPhone
5604 1.0 Ericsson iPhone
5605 1.0 Ericsson iPhone
5606 1.0 Ericsson iPhone
5607 1.0 Ericsson iPhone
5608 1.0 Ericsson iPhone
5920 5.2.0.402 Ericsson iPhone
5931 5.2.0.402 Ericsson iPhone
9005 R2B/R4F/R4A DBC42501
WAIT

END
<cnbip:brdid=114,lim=all;

DEVICE BOARD REVISION INFORMATION
DATE: 05JAN07 TIME: 14:23:41

BPOS BOARD/BRDID PRODUCT NUMBER REVISION STATUS ADD
/IND

003-2-30 ELU32 ROF1375428/1 R6A
CAA 158 0022 R6A EXE
003-2-32 ELU32 ROF1375428/1 R6A
CAA 158 0022 R6A EXE
003-2-40 ELU32 ROF1375428/1 R6A
CAA 158 0022 R6A EXE
003-2-42 ELU32 ROF1375428/1 R6A
CAA 158 0022 R6A EXE
003-2-50 ELU32 ROF1375428/1 R6A
CAA 158 0022 R6A EXE
003-2-60 ELU32 ROF1375428/1 R6A
CAA 158 0022 R6A EXE
003-2-70 ELU32 ROF1375428/1 R6A
CAA 158 0022 R6A EXE

END

 

[whosrdaddy]

latest status for BC12SP11:


ELU32 = R7A
phone firmware = R5H

also use latest version of ECC


-----------------------------------------------------
What You See Is What You Get
Never underestimate tha powah of tha google!

 

[allneo01]

Many tanks for your help
now I try what your suggest.