TP-LINK JetStream TL-SG3216 TL-SG3216 Data Sheet

 

Voice VLANs are configured specially for voice data stream. By configuring Voice VLANs and 

adding the ports with voice devices attached to voice VLANs, you can perform QoS-related 

configuration for voice data, ensuring the transmission priority of voice data stream and voice 

quality. 

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OUI Address (Organizationally unique identifier address) 

The switch can determine whether a received packet is a voice packet by checking its source MAC 
address. If the source MAC address of packet complies with the OUI addresses configured by the 
system, the packet is determined as voice packets and transmitted in voice VLAN. 

An OUI address is a unique identifier assigned by IEEE (Institute of Electrical and Electronics 

Engineers) to a device vendor. It comprises the first 24 bits of a MAC address. You can recognize 

which vendor a device belongs to according to the OUI address. The following table shows the 

OUI addresses of several manufacturers. The following OUI addresses are preset of the switch by 

default. 

1 00-01-E3-00-00-00 Siemens 

phone 

2 00-03-6B-00-00-00 Cisco 

phone 

3 00-04-0D-00-00-00 

Avaya 

phone 

4 00-60-B9-00-00-00 Philips/NEC 

phone 

5 00-D0-1E-00-00-00 

Pingtel 

phone 

6 00-E0-75-00-00-00 Polycom 

phone 

7 00-E0-BB-00-00-00 

3com 

phone 

Table 9-1 OUI addresses on the switch 

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A voice VLAN can operate in two modes: automatic mode and manual mode.   

Automatic Mode: In this mode, the switch will automatically add a port which receives voice 

packets to voice VLAN and determine the priority of the packets through learning the source MAC 

of the UNTAG packets sent from IP phone when it is powered on. The aging time of voice VLAN 

can be configured on the switch. If the switch does not receive any voice packet on the ingress 

port within the aging time, the switch will remove this port from voice VLAN. Voice ports are 

automatically added into or removed from voice VLAN. 

Manual Mode: You need to manually add the port of IP phone to voice VLAN, and then the switch 

will assign ACL rules and configure the priority of the packets through learning the source MAC 

address of packets and matching OUI address. 

In practice, the port voice VLAN mode is configured according to the type of packets sent out from 

voice device and the link type of the port. The following table shows the detailed information.   

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