Mitel 5560 IPT none Specifications download pdf (Page 244)

Engineering Guidelines

230

Start-Up Sequence and DHCP

The previous chapter “Network Configuration Concepts” on page 191 dealt with network

conditions and call traffic. However, before any of this can occur, the system first needs to be

installed and the phones need to obtain their operating software. Refer to Table 78 for VLAN

priority information.

“LAN Policy” consists of a set of three parameters that are used to control segregation and

priority of voice traffic across the network. These parameters are

• VLAN ID (IEEE 802.1Q)

• Layer 2 priority (IEEE 802.1D/p)

• Diffserv Codepoint (DSCP, Layer 3 priority)

Startup Sequence for Phones

Options for obtaining LAN Policy setting information per software release

There are now four potential methods that MiVoice IP Phones can use to obtain VLAN setting

information, they are:

1. Static values that are held in the phone’s flash memory. (The installer can program the

phone with static values via the phone’s keypad).

2. The Voice VLAN may be learned via LLDP-MED.

3. The Voice VLAN may be learned via CDP.

4. The Voice VLAN may be learned via DHCP.

Note: The 5302 start up sequence differs from the method used by other Mitel phones.

Refer to “5302 Startup and DHCP” on page 240 for information about the 5302 phone.

Notes:

1. Not all phones support all of the above options. See “IP Phones and VLAN

programmability” on page 238 to determine which phones support which options.

2. The 5550 IP console supports methods 3-4. The 5302 is covered on page 240.

3. Third-party SIP devices do not necessarily support the options that are supported

by Mitel phones. In general third party SIP phones should be statically programmed.

4. The legacy 5550 TKB does not support configurable DSCP values. All traffic from

the 5550-TKB is hard coded with a DSCP value of ‘44’.

5. The legacy 5550 TKB does not support LLDP-MED.

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Mitel 5560 IPT none Specifications Page 244