[OSL | CCIE_Voice] VG 202 integration CME (H323)

[Vignesh Sethuraman]

Hello All,

I have integrated VG202 with CME using H323. The integration is through IP
connectivity.

I can make calls from IPphone registered to CME to the Analog phone
connected to VG202.

I could not hear any dial-tone when the Analog phone goes off-hook nor I
can dial any Cisco IP phone connected to CME.  I tried to connect to
different port on VG202, used different Analog phone, reloaded the VG202.
No luck.

Please find below the config of  VG202.

voice service voip
 ip address trusted list
  ipv4 0.0.0.0 0.0.0.0
 allow-connections h323 to h323
 supplementary-service h450.12
 fax protocol pass-through g711alaw
 h323
 modem passthrough nse codec g711alaw
!
voice class h323 1
  h225 timeout tcp establish 3
!
voice-card 0
!
interface FastEthernet0/0
 ip address X.X.X.X 255.255.255.0
 duplex auto
 speed auto
 h323-gateway voip interface
 h323-gateway voip bind srcaddr X.X.X.X
!
interface FastEthernet0/1
 no ip address
 duplex auto
 speed auto
!
ip forward-protocol nd
!
no ip http server
ip route 0.0.0.0 0.0.0.0 X.X.X.X
!
control-plane
!
!
voice-port 0/0
 no supervisory disconnect lcfo
 ring frequency 20
 ring cadence pattern11
 disconnect-ack
 compand-type a-law
 cptone MY
 timeouts initial 60
 timeouts interdigit 60
 timeouts ringing infinity
 caller-id enable
!
voice-port 0/1
 no supervisory disconnect lcfo
 disconnect-ack
 compand-type a-law
 cptone MY
 timeouts initial 60
 timeouts interdigit 60
 timeouts ringing infinity
 timeouts power-denial 500
 caller-id enable
!
no ccm-manager fax protocol cisco
!
mgcp profile default
!
!
dial-peer voice 805 voip
 destination-pattern 0T
 modem passthrough nse codec g711alaw
 session target ipv4:X.X.X.X (CME IP)
 voice-class h323 1
 codec g711alaw
 fax protocol none
 no vad
!
dial-peer voice 4805 voip
 modem passthrough nse codec g711alaw
 incoming called-number .
 voice-class h323 1
 codec g711alaw
 fax protocol none
 no vad
!
dial-peer voice 1 pots
 destination-pattern 4805
 port 0/0
 forward-digits all
!
!
!
line con 0
 login local
 no modem enable
line aux 0
line vty 0 4
 login local
 transport input all
!
end

Thanks  Regards,
Vignesh S
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[OSL | CCIE_Voice] Conference codec explanation

[Samson Kareem]

HI,
 
Can anyone explain to me the following logic:
 
I am making a conference call between 2 phones at site C and a phone at site B. 
The conference resource is on the site B gateway. 

When the call is up the sh sccp connections cmd shows that the codec negotiated 
is G729b for the site C phones and
G711 for the site B phone. (CUCM region settings are G711 for intra-region 
calls  G729 for inter-region calls)
 
BR1#sh sccp conn
sess_idconn_id  stype mode codec   sport rport ripaddr
33556439   33554497 conf  sendrecv g729b   18468 17118 192.168.45.130
33556439   33554495 conf  sendrecv g729b   17116 29316 192.168.45.121
33556439   33554493 conf  sendrecv g711u   18868 18282 192.168.35.121

My question is why is G729b negotiated? I was expecting G729...

If I remove G729b from the dspfarm profile, then G729ab is negotiated and if I 
remove that G729 gets negotiated.

It's not codec complexity, as 729b is high complexity. I thought it might be 
configuration order of the codecs
but removing and re-adding a codec does not make any difference.
 
Sorry if I'm missing something obvious, it's been a long day but would 
appreciate it if someone could explain this to me.
 
thanks in advance
Samson

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[OSL | CCIE_Voice] B-ACD and MoH Multicast

[Ivan Darío Sánchez Calderón]

Hi,

When you configure B-ACD is mandatory to configure MoH on the Router, it is
also Mandatory to configure Multicast MoH on the CUCM? or how the phones
know in which ip address they have to listen? I am confused about that.
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