12-26-2011 09:15 AM - edited 03-16-2019 08:42 AM
Hello All,
I am using Cisco call manager 6.0 and i am using public IP on it.I configure it well now my phone are registered from every network but i have one problem that my voice is going but i can't hear the another side voice. On my router or switch m not using any voice vlan or any rule so please advise me how to solve this problem ?
thanks
Mukesh
12-26-2011 03:31 PM
Do you have a topology to provide? And do you have a firewall in your topology?
The IP Routing is working fine?
Thanks
12-26-2011 10:16 PM
Hello Leonardotadeu,
Sorry dear i have no topology to provide u but i can explain it I am working on ISP and i my CUCM is connected with BGP running router and i have no firewall and ACL.I think my routing is running well that's why imy phone are registered and one side voice is coming,and on router i have no voip rules like voice vlan or anything so please tell me can i need any additional command on router or switch for Voip ?
Thanks in Advance
Regards
Mukesh
12-26-2011 10:26 PM
Mukesh,
Are you using Cisco Hosted Collaboration Solution ( HCS ) ?
GP
12-26-2011 11:19 PM
Hello Gajanan,
No m not using HCS.
Thanks
12-27-2011 03:42 AM
The problem occur between IP Phones on different networks? Or in the same network?
Regards
12-27-2011 03:25 AM
Hi,
As a rule one way audio problems depends on routing issues.
If you have no back route,it will be so.
You should be able to ping phone IP and call destination IP from nearest switch to the phone.
http://www.scribd.com/doc/2584048/Cisco-Configuring-Voice-VLAN
Hope it helps.
12-27-2011 04:14 AM
Hello Leonardotabeu,
The voice problem is occur on both network local and public.all the phone of locan and public are registered with CUCM and call also going,but problem it that when the any phone are registered with public IP then voice is going and coming but when phone are registered with private(local) ip then the voice is going ans i have no any firewall or ACL in my network.
My configuration are:-
On router
interface GigabitEthernet0/3.522
encapsulation dot1Q 522
ip address 109.205.117.229 255.255.255.252
On switch
interface fa0/11
switchport voice vlan 522
switchport mode access
switchport port-fast
If you found any wrong in this configuration please tell me .
Thanks
Regards
Mukesh
CUCM :
Ip add:- 109.205.117.230
12-27-2011 07:46 AM
Sorry i dont unterstand can put like this the call flow:
IP Phone A (Public IP) ---> CUCM ---> IP Phone B (LAN)
And point when the issue occur and in what direction.
Thanks
12-27-2011 09:28 PM
IP Phone A (Public IP)---SW1---...---...---... ---> CUCM --->---SW2---...---... IP Phone B (LAN)
Can you ping SW2 from SW1?
12-27-2011 11:33 PM
Hello All ,
Thanks for reply.
I am using this type of topology.
1. IP Phone A (Public IP)---SW1---...---...---... ---> CUCM --->---SW2---...---... IP Phone B(Public IP) Both side voice
2. IP Phone A (Public IP)---SW1---...---...---... ---> CUCM --->---SW2---...---... IP Phone B(Private IP)
voice at only IP Phone A
3.IP Phone A (Private IP)---SW1---...---...---... ---> CUCM --->---SW1---...---... IP Phone B(private IP) no voice both side
If u found any problem in this topology please advise me.
thanks
Mukesh
12-28-2011 12:00 AM
Hi,
So,check your routes.
You should be able ping without problems Private and Public IP in your network.
If you'll not be able to ping Phones,no voice will be.
Check routing tables ...
12-28-2011 03:20 AM
Hello,
I can ping from my CUCM any Public IP and my CUCM ip is also pinging from any network so i think my routing is good but the IP of Phone is not the my DHCP subnet ip ,the phone taking ip from own network ao what may be this problem ?
thanks
Mukesh
12-28-2011 03:28 AM
Ok.
So,
For example.
You have Phone A with 192.168.1.1 Address.
Phone B with 10.11.12.13 address.
On the SW for Phone A i thik you should have Voice vlan Ip address like 192.168.1.XXX
And on the SW for Phone B SW voice vlan address should be 10.11.12.XXX
If you have L2 switches,it doen't matter,then from your router or another L3 device,nearest to the phone A and Phone B
You should ping successfull.
ping 10.11.12.13 /source-interface 192.168.1.XXX
ping 192.168.1.1 /source-interface 10.11.12.XXX
So,Phones should (communicate) ping each other without problems.
12-28-2011 04:01 AM
HI D,
I explain my topology here:-
CUCM IP :- 109.205.117.230/30( Public IP)
DHCP Server IP:- 109.205.117.230
Primary TFTP Server IP Address(Option 150):- 109.205.117.230
DHCP Subnet:- 10.10.0.0/24
On router (CISCO 7200)
interface GigabitEthernet0/3.522
encapsulation dot1Q 522
ip address 109.205.117.229 255.255.255.252
On switch(Cisco C3550)
interface fa0/11
switchport voice vlan 522
switchport mode access
switchport port-fast
First IP Phone IP:- 117.199.123.15 (Voice can hear)
Second IpPhone IP:- 192.168.1.119 (NO voice hear )
Auto registration is enable.
Sir please tell me if i have any wrong in this configuration.
Thanks in Advance
Regards
Mukesh
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