[inet-admins] cisco 1750 and netmeeting: help needed

[Alexander Kolesnik <sasha@xxxxxxxxx>]

Коллеги,

Вполне  допускаю,  что  это  known-issue,  но  поиск в инете абсолютно
ничего не дал.

Есть PC с WinXP SP2 с NetMeeting и циска 1750. Оба девайса находятся в
одном сегменте. У циски два интерфейса FXO, оба включены в офисную PBX
Multicom MP80 в абонентские порты.

При  звонке  на netmeeting с местного телефона (подключенного к той же
АТС)  или с него на местный телефон, отсутствует звук в направлении от
телефона  к  netmeeting'у.  Т.е. абонент на обычном телефоне прекрасно
слышит абонента на NM, а вот абонент на NM ничего не слышит.

NM  настроен  согласно  цисковой  доке: кодек - u-Law, циска прописана
шлюзом.
Конфиг циски и пр. ниже:

c1750#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C1700 Software (C1700-SV3Y-M), Version 12.2(46), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2007 by cisco Systems, Inc.
Compiled Thu 26-Apr-07 17:56 by pwade
Image text-base: 0x800080E0, data-base: 0x80B323B8

ROM: System Bootstrap, Version 12.0(3)T, RELEASE SOFTWARE (fc1)

c1750 uptime is 32 minutes
System returned to ROM by power-on
System restarted at 18:57:08 MSD Wed May 30 2007
System image file is "flash:c1700-sv3y-mz.122-46.bin"

cisco 1750 (MPC860) processor (revision 0x502) with 29492K/3276K bytes of 
memory.
Processor board ID JAD03447815 (2709913689), with hardware revision 0000
M860 processor: part number 0, mask 32
Bridging software.
X.25 software, Version 3.0.0.
1 FastEthernet/IEEE 802.3 interface(s)
2 Serial(sync/async) network interface(s)
2 Voice FXO interface(s)
32K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

c1750#sh run
version 12.2
!
hostname c1750
!
clock timezone MSK 3
clock summer-time MSD recurring last Sun Mar 3:00 last Sun Oct 3:00
ip subnet-zero
no ip routing
no ip rcmd domain-lookup
ip name-server 172.26.1.2
ip name-server 172.26.1.20
!
call rsvp-sync
!
voice service voip
!
voice class codec 1
 codec preference 1 g711alaw
 codec preference 2 g711ulaw
!
interface FastEthernet0
 ip address 172.26.1.3 255.255.0.0
 no ip route-cache
 no ip mroute-cache
 speed auto
 full-duplex
!
interface Serial0
 no ip address
 no ip route-cache
 no ip mroute-cache
 shutdown
!
interface Serial1
 no ip address
 no ip route-cache
 no ip mroute-cache
 shutdown
!
ip classless
no ip http server
!
!
voice-port 2/0
 signal groundStart
 cptone RU
 bearer-cap Speech
 station-id name C1750-136
 station-id number 136
!
voice-port 2/1
 signal groundStart
 cptone RU
 bearer-cap Speech
 station-id name C1750-137
 station-id number 137
!
dial-peer voice 1 pots
 destination-pattern 1..
 no digit-strip
 port 2/0
!
dial-peer voice 2 voip
 destination-pattern 999
 ! адрес NM
 session target ipv4:172.26.10.1
 codec g711ulaw
 no vad
!
dial-peer voice 3 pots
 destination-pattern 04
 no digit-strip
 port 2/1
!
ntp clock-period 17179965
ntp server 172.26.1.1
end


c1750#show call history voice
Total call-legs: 2

GENERIC:
SetupTime=151047 ms
Index=3
PeerAddress=999
PeerSubAddress=
PeerId=2
PeerIfIndex=10
LogicalIfIndex=0
DisconnectCause=10
DisconnectText=normal call clearing.
ConnectTime=151499
DisconnectTime=153206
CallDuration=00:00:17
CallOrigin=1
ChargedUnits=0
InfoType=speech
TransmitPackets=852
TransmitBytes=136320
ReceivePackets=621
ReceiveBytes=99360
VOIP:
ConnectionId[0xEC550EC6 0xDEE11DC 0x8008EF3C 0xD9776C1C]
IncomingConnectionId[0xEC550EC6 0xDEE11DC 0x8008EF3C 0xD9776C1C]
RemoteIPAddress=172.26.10.1
RemoteUDPPort=49606
RemoteSignallingIPAddress=172.26.10.1
RemoteSignallingPort=1720
RemoteMediaIPAddress=172.26.10.1
RemoteMediaPort=49606
RoundTripDelay=0 ms
SelectedQoS=best-effort
tx_DtmfRelay=inband-voice
FastConnect=FALSE

Separate H245 Connection=TRUE

H245 Tunneling=FALSE

SessionProtocol=cisco
SessionTarget=ipv4:172.26.10.1
OnTimeRvPlayout=11530
GapFillWithSilence=40 ms
GapFillWithPrediction=140 ms
GapFillWithInterpolation=0 ms
GapFillWithRedundancy=0 ms
HiWaterPlayoutDelay=65 ms
LoWaterPlayoutDelay=58 ms
ReceiveDelay=58 ms
LostPackets=0
EarlyPackets=1
LatePackets=0
VAD = disabled
CoderTypeRate=g711ulaw
CodecBytes=160
cvVoIPCallHistoryIcpif=12

GENERIC:
SetupTime=150847 ms
Index=4
PeerAddress=136
PeerSubAddress=
PeerId=1
PeerIfIndex=9
LogicalIfIndex=7
DisconnectCause=10
DisconnectText=normal call clearing.
ConnectTime=151500
DisconnectTime=153294
CallDuration=00:00:17
CallOrigin=2
ChargedUnits=0
InfoType=speech
TransmitPackets=621
TransmitBytes=99360
ReceivePackets=852
ReceiveBytes=136320
TELE:
ConnectionId=[0xEC550EC6 0xDEE11DC 0x8008EF3C 0xD9776C1C]
IncomingConnectionId=[0xEC550EC6 0xDEE11DC 0x8008EF3C 0xD9776C1C]
TxDuration=17060 ms
VoiceTxDuration=17060 ms
FaxTxDuration=0 ms
CoderTypeRate=g711ulaw
NoiseLevel=0
ACOMLevel=26
SessionTarget=
ImgPages=0

Заранее спасибо за помощь!

-- 
С уважением,
Александр Колесник