Users Guide
Deploying Voice Over IP (VoIP)
For a complete list of all PoE commands, see the Dell Networking OS Command Line Reference Guide.
Current VoIP phones follow the same basic boot and operations process:
1 Wait for an LLDP from the Ethernet switch.
2 Obtain an IP address from a dynamic host conguration protocol (DHCP) server.
3 Send an LLDP-MED frame to the switch.
4 Wait for an LLDP-MED frame from the switch and read the Network Policy TLV to get the VLAN ID, Layer 2 priority, and DSCP value.
5 Download applications and software from the call manager.
6 After the conguration completes, send voice packets as tagged frames and data packets as untagged frames.
The following shows a basic conguration for a deployment in which the end workstation plugs into an IP phone for its Ethernet
connection.
Figure 119. PoE VoIP
Creating VLANs for an Oce VoIP Deployment
The phone in the previous gure requires one tagged VLAN for VoIP service and one untagged VLAN for PC data, as shown in the
following example.
You can congure voice signaling on the voice VLAN but some implementations may need an extra tagged VLAN for this trac.
Example of Adding an Extra Tagged VLAN for Voice Signaling
Dell#show running-config interface configured
!
interface PeGigGE 0/6/1
no ip address
no shutdown
!
interface PeGigGE 0/6/10
no ip address
portmode hybrid
switchport
!
power inline
no shutdown
!
interface Vlan 100
description "Data VLAN"
no ip address
untagged PeGigGE 0/6/10-11,22-23,46-47
shutdown
!
interface Vlan 200
804
Power over Ethernet (PoE)