IP Office 500v2 R8066 - SSA packet loss

[matsop]

Hello, sorry for my English.

A customer has installed an IP Office 500v2 R8.0.66.
Extensions are varied: Avaya 1616 - CISCO IP and Polycom SoundPoint.
It also has SIP trunk (2 channels) to Audiocode 114 and other (15 channels) to an asterisk that functions as CALL CENTER.
System Status report packet loss in the Polycom extensions but not in cisco ip phone, Avaya IP phone or SIP trunks.
The percentage of packet loss varies and is not always an extension in particular.

The network has implemented VLAN and QOS.

Users report cuts on calls between internal extension.

Any suggestions on how to solve the problem?

 

[smokinjoe2938]

do not trust system status too much for packet loss as I have been told by Avaya, a monitor trace would be better!

 

[matsop]

ok ... And as I run "monitor trace" ... from Avaya system monitor ? Filters ?

 

[Johan1234]

try H.323 only. After a bad call, check sent and received packets. These should be in balance.

Johan W.
ACIS-SME
ACSS-SME
APSS-SME

 

[matsop]

This morning talking to the network administrator (external company) told me that the DSCP value used by HP V1910 swicht -48g JE009A is "AF31" while IP Office uses "EF" - 46.
I asked if I could change the value to which replied that it is not possible.
This afternoon we'll change the DSCP value in the IP OFFICE to AF31 (DSCP Dec 26) and see how it works.

I accept suggestions !!!

 

[tlpeter]

Extensions are varied: Avaya 1616 - CISCO IP and Polycom SoundPoint.
It also has SIP trunk (2 channels) to Audiocode 114 and other (15 channels) to an asterisk that functions as CALL CENTER.

What a complete mess.
I would start with grouping the problem on these systems.
It is internal too and then also the other brands yes or no etc etc etc.
Why all these different brands and connections?


BAZINGA!

I'm not insane, my mother had me tested!

 

[matsop]

1) Hello, the customer had this running ELASTIX installation without VLAN and QOS.
According to customer everything worked OK uncut calls between extensions.
example:

ISDN <TELECOM> ELASTIX <SIP TRUNK> Tecnovoz (CALL CENTER ASTERIX)

Elastix <> Phones Polycom and Cisco
Elastix <> Audiocode 114 for analog extensions, eg. POSNET

Then, the customer decided to replace ELASTIX with AVAYA IP OFFICE.
In addition, two AVAYA 1616 IP phones for operators were added.

"That is why all connections and brands"

2) When installing IP OFFICE everything worked ok until packet loss appeared on SSA.
At that time we implement VLAN and QOS (AF31 dscp) .The packet loss decreased but not disappeared.
Right now everything works fine and consult with users tell us that these calls are not cut but SSA says:

"ALL POLYCOM EXTENSION"

10/12/2014 9:53:03 6248 Extension 133 10.30.251.62 10.30.251.254 93.3%
10/12/2014 10:13:45 10.30.251.33 10.30.251.254 301 6439 Extension 99.6%
10/12/2014 10:16:56 10.30.251.82 10.30.251.254 202 6452 Extension 99.6%
10/12/2014 10:22:07 10.30.251.82 10.30.251.254 202 6552 Extension 99.6%
10/12/2014 10:32:31 10.30.251.54 6652 Extension 118 10.30.251.254 96%

Said monitor:

80310914mS Interface Rx: v=LAN1 LAN
Ethernet Header info - dst=00e00707f93b src=0004f228b3f8 len=70
IP Header info - Dst=10.30.251.254 Src=10.30.251.173 vl=0x45 [highlight #EF2929]tos=0x68[/highlight] len=56 id=0x0570
ttl=64 flg=0 off=0 pcol=1(ICMP) sum=0x6905
ICMP Destination Unreachable(Port Unreachable). [csum=0xffe1]
Useful Original packet details:-
Src=10.30.251.254 Dst=10.30.251.173 pcol=17(UDP) id=0x473e [highlight #EF2929]tos=0x68[/highlight] ttl=99
SrcPort=123(Network Time Protocol) DstPort=123(Network Time Protocol) :-
0000 45 68 00 4c 47 3e 00 00 63 11 00 00 0a 1e fb fe Eh.LG>..c.......
0010 0a 1e fb ad 00 7b 00 7b 00 38 00 00 .....{.{.8..


3)[highlight #FCE94F] See, NComputing can cause problems with IP Phone.[/highlight]

We are now verifying that the uplinks are configured as QOS AF31.

I accept suggestions.


Thank you

 

[nnaarrnn]

I see packet loss like that on our own system, but only on the phones that are on a Cisco switch. Those that are on an Avaya switch don't show any packet loss. There are ZERO call quality issues, even though I would expect them.

 

[matsop]

Hello, could be problems SIP client version of the POLYCOM phones ?


Thank you