Troubleshooting guide

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3300 ICP Technician’s Handbook
To use an alternative DHCP server:
1. In the DHCP Server form, disable the internal DHCP server.
2. Program your DHCP server with options 128-133.
3. Upgrade the IP Phones/ firmware to 2.0.0.18 or later.
4. Program your DHCP server with the following options:
- 43 Vendor Specific Information, string value OR
- 125 Vendor-Identifying Vendor-Specific Information, string value.
5. Delete options 128-133.
Program LS Trunk Settings via LS Measure Tool
Use the LS Measure tool in the System Administration Tool to program the
line settings for Loop Start (LS) trunks that are connected to the AX
Controller Card Chassis, Analog Main Board, Analog Option Board, or
ASU II. The LS Measure Tool supports the following tests:
• Individual or Batch Line Quality Test
• Individual or Batch Distortion/Echo Test
The Line Quality Test allows you to obtain the optimum Balance Network
Setting and Trunk Category for each LS trunk, based on the signals
received from the CO. These settings are then programmed into the
Analog Trunks form of the LS trunks to reduce the possibility of echo and
audio level issues between the trunks and IP phones.
The Distortion/Echo test should only be run at the request of Mitel
Technical Support.
Refer to the following book in the System Administration Tool online help
for instructions: Programming -> Programming Trunks -> Using the
Line Measure Tool.
LS Trunk Selection in the UK
Poor audio quality may be experienced if the incorrect subscriber line has
been provided by the carrier.
To ensure that the correct lines are provisioned in the UK, the installer or
system administrator should request that the Telco (e.g. BT), or carrier,
provide trunks that are compatible to System X line type ‘0’ (Subscriber
lines) or line type ‘3’ (business PBX/PABX lines).