leblanc
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PBX digital voice and VoIP
Can the experts explain the difference between the digital voice with the PBX and the VoIP? I understand VoIP with the phone getting an IP address and the packet is marked with appropriate QoS. But I am not sure about the digital voice. My engineer told me that when the phone call is wihtin the LAN, it is a digital voice. But when somebody calls to another location, the voice traffic is converted to VoIP by the PBX and sent via the MPLS network. I am not sure I understand how this whole things works. The reason I ask is because usually, I have the VoIP in 1 vlan subnet and my data in another vlan subnet so I can adjust the QoS accordingly. But in this case, digital converted to VoIP and ride on the same subnet as my data vlan. I am not sure how I will adjust the QoS. Thanks
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I believe we have the same setup. From my understanding the PBX handles all the local digital phone calls with the SIP trunk (I think). When the phone call needs to access the remote sites, the PBX sends it to another device to convert to VoIP and send it through the MPLS network. How do you configure your QoS? The reason is it looks like the VoIP and the data share the same VLAN and I am not surehowthat will work if I marked the VoIP packets with EF or dscp 46. Thx