Re: ata15

nettuno8_20111 · ‎11-19-2022

hi I have a cme 2600 router and a 2950 switch and I configured them as voice and data in a small company in the company I have voip hosts and phones and everything works correctly, but now I brought the internet line and the voice line to an urban dwelling via CPE ANTENNAS where the LAN cable coming out of the CPE enters the voip telephone and exits from the voip and goes to an access point. the internet works but the 7900 series voip phone did not register with the cme 2600 router i think the problem is that the voip phone cannot find both the voice vlan and the voice network. what can i do to make the voice line work. should i put a spa-122 ata in it? but would it work?

Nithin Eluvathingal · ‎11-19-2022

Put both Data an voice in Different subnet, Different vlans.

Could you kindly share your CME configurations ?

nettuno8_20111 · ‎11-21-2022

ip dhcp pool data
network 192.168.1.0 /24
default-router 192.168.1.1
dns-server 8.8.8.8 8.8.4.4

ip dhcp pool voice
network 192.168.2.0 /24
default-router 192.168.2.1
option 150 ip 192.168.2.1

interface f0/1
ip address 192.168.1.1 255.255.255.0
ip nat inside
description data

interface f0/1.2
encapsulation dot1q 2
ip address 192.168.2.1 255.255.255.0
desceiption voice

telephony-service
create cnf-files
max ephone-dn 10
max ephone 10
ip source address 192.168.2.1 port 2000

ephone-dn 1
number 2000
name michele
label michele

ephone 1
mac-address xxx.xxx.xxx
button 1:1
tyte 7960

switch:

interface f0/1
switchport mode trunk
switchport voice vlan 2

interface f0/2
switchport mode access
switchport voice vlan 2
spanning-trr portfast

interface f0/3
switchport mode access
switchport voice vlan 2
spanning-trr portfast

they are in different networks everything works for me in the company the problem is that I don't know how to bring the phone to an urban apartment via CPE antennas how can I do it?

toddbengen · ‎11-22-2022

I am not a VoIP guy - but - if the connection from the office to the apartment is going over a public network - the 192.168.2 0 addresses will not be allowed. The ip nat inside command on the fa0/1 provides a public address when hosts from the 192.168.1.0 network leave the office location - like to surf the Internet. This command does NOT flow down to sub-interfaces under the fa0/1 physical interface.

The lack of an ip nat inside command on the fa0/1.2 sub-interface will make it impossible for traffic from the 192.168.2.0 network to pass to or through the public network connecting you to your ISP.

I would at least try an ip nat inside command on the fa0/1.2 sub-interface. Hopefully someone with a VoIP background will chime in to better assist you. Good luck.

interface f0/1
ip address 192.168.1.1 255.255.255.0
ip nat inside
description data

interface f0/1.2
encapsulation dot1q 2
ip address 192.168.2.1 255.255.255.0
desceiption voice

Nithin Eluvathingal · ‎11-23-2022

From apartment if you can connect the office network your phone will work.if you are not able to reach the office network, You need a VPN to connect with your office network for the phone to work from apartment.

If you have CUCM deployment with MRA enabled, you dont need a VPN the phone can connect over the public network.