VLANs , tag a port, can a port put in different VLANs, do I have to tag a port ...

VLANs , tag a port,

can a port put in different VLANs, do I have to tag a port ...

yeah, ccna ......

anyway, I have to configure some VLAN on a 24-port Planet switch for a VOIP phone system, oh dear, this model is not cheap, POE, phew.........

http://alliedtelesis.com/manuals/awplusv212weba/port_based_tagged_vlans.html

I quote here

Tagged and Untagged Ports

You need to specify which ports are members of the VLAN. In the case of a tagged VLAN, it is usually a combination of both untagged ports and tagged ports. You specify which ports are tagged and which untagged when you create the VLAN.

An untagged port, whether a member of a port-based VLAN or a tagged VLAN, can be in only one VLAN at a time. However, a tagged port can be a member of more than one VLAN. A port can also be an untagged member of one VLAN and a tagged member of different VLANs simultaneously.