Network Configuration Specifics
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When it is desired to use separate voice and signalling priorities, Mitel recommends the
following:
•
Voice DSCP 46, 802.1p '6'
•
Signalling DSCP 26, 802.1p '3'
•
Other DSCP 0, 802.1p ‘0’
The new Cisco LAN Policy defaults pre-defined in AutoQoS are:
•
Voice DSCP 46, 802.1p '5'
•
Signalling DSCP 24, 802.1p '3'
•
Other DSCP 0, 802.1p ‘0’
The legacy Cisco LAN policy settings are:
•
Voice DSCP 46, 802.1p '5'
•
Signalling DSCP 26, 802.1p '3'
•
Other DSCP 0, 802.1p ‘0’
DSCP SETTINGS FOR CALL SIGNALLING IN CISCO ENVIRONMENTS
Cisco has supported DSCP 26 (PHB AF31) and more recently DSCP 24 (PHB CS3) for call
signalling. As a result, Cisco has "recommended that both AF31 and CS3 be reserved for call
signalling". It is therefore advised to determine whether both or which one of these settings is
supported throughout the network before setting the signalling DSCP value for call signalling
at installation, e.g. through DHCP settings. Ideally both AF31 (26) and CS3 (24) should be
assigned to the same priority queue.
DHCP AND IP PHONE NETWORK POLICY
When the IP phone uses the DHCP method to obtain VLAN and priority information, it will do
sequential fetches on the default (untagged) VLAN and the tagged VLAN. This will double the
retrieval of information depending on the way information is entered. It is important that the
DHCP servers for the voice and data VLANs each have the same VLAN and priority information.
Also, the ability to provide partial information at each stage allows these three methods to be
used together to ease installation. This sequence works with either multiple DHCP servers,
one on each VLAN, or the router/Layer 3 switch connecting the VLANs has DHCP forwarding
capability
(also known as DHCP Relay, or IP Helper on certain vendor equipment).
We recommend using the internal 3300 ICP TFTP server. An external TFTP server can be
used but then it is important to ensure that the downloads maintain version control with upgrades
that are applied to the ICP, using the most recent software versions available. In a multiple-ICP
installation with multiple versions, this can become network management overhead.
One of the options that the IP phone obtains is the RTC (Real Time Complex and call control)
address of a 3300 ICP. Since the address in this DHCP option is not dynamic, this address
must be pre-assigned statically within the ICP before it is connected to the network.
Summary of Contents for MiVOICE BUSINESS
Page 1: ...Mitel MiVoice Business RELEASE 7 2 ENGINEERING GUIDELINES ...
Page 15: ...Chapter 1 ABOUT THIS DOCUMENT ...
Page 16: ......
Page 22: ...Engineering Guidelines 8 ...
Page 23: ...Chapter 2 SYSTEM OVERVIEW ...
Page 24: ......
Page 28: ...Engineering Guidelines 14 ...
Page 29: ...Chapter 3 TYPICAL CONFIGURATIONS ...
Page 30: ......
Page 73: ...Chapter 4 PHONES AND VOICE APPLICATIONS ...
Page 74: ......
Page 95: ...Phones and Voice Applications 81 Figure 9 ICP Connection Paths and Limitations ...
Page 100: ...Engineering Guidelines 86 ...
Page 101: ...Chapter 5 POWER ...
Page 102: ......
Page 128: ...Engineering Guidelines 114 ...
Page 129: ...Chapter 6 PERFORMANCE ...
Page 130: ......
Page 135: ...Chapter 7 APPLICATIONS ...
Page 136: ......
Page 142: ...Engineering Guidelines 128 ...
Page 143: ...Chapter 8 EMERGENCY SERVICES ...
Page 144: ......
Page 151: ...Chapter 9 IP NETWORKING ...
Page 152: ......
Page 167: ...Chapter 10 LICENSING ...
Page 168: ......
Page 183: ...Chapter 11 BANDWIDTH CODECS AND COMPRESSION ...
Page 184: ......
Page 209: ...Chapter 12 NETWORK CONFIGURATION CONCEPTS ...
Page 210: ......
Page 244: ...Engineering Guidelines 230 ...
Page 245: ...Chapter 13 NETWORK CONFIGURATION SPECIFICS ...
Page 246: ......
Page 309: ...Appendix A CAT 3 WIRING ...
Page 310: ......
Page 315: ...CAT 3 Wiring 301 Figure 55 CX MX MXe AX and LX Minimum Cable Standard ...
Page 316: ...Engineering Guidelines 302 ...
Page 317: ...Appendix B INSTALLATION EXAMPLES ...
Page 318: ......
Page 335: ...Appendix C LLDP AND LLDP MED CONFIGURATION EXAMPLES ...
Page 336: ......
Page 347: ...Appendix D VOIP AND VLANS ...
Page 348: ......
Page 353: ...Appendix E VOIP SECURITY ...
Page 354: ......
Page 381: ... ...