Nortel Networks 1000 Data Path Capture tool, IP Phone firmware

Page 240 of 910 Features

553-3001-365 Standard 4.00 August 2005

The IP Phone three-port switch does not interpret the 802.1Q header. Instead,

the three-port switch allows the packets to pass through unmodified. Packet

priority is achieved on a per-port basis. IP Phone port traffic has a higher

priority than traffic for the Ethernet port to which the PC is connected.

An IP Phone can receive broadcast frames from a PC’s data VLAN. Any

broadcast storm packets from the data network are seen by the IP Phone.

However, this type of traffic does not adversely affect the IP Phone.

Data Path Capture tool

IP Line 4.5 contains the Data Path Capture tool, a built-in utility used to

capture audio information. This tool helps debug audio-related gateway

problems and allows after-the-fact analysis of what the user heard.

The Data Path Capture process is controlled by a set of CLI commands.

Refer to the ReadmeFirst documentation to determine the IP Phone minimum

firmware (F/W) versions supported by IP Line 4.5.

The firmware files for the IP Phones are downloaded from OTM 2.2 or

Element Manager to the node Master. They are compressed as they are stored

on the node Master card’s /C: drive. File compression reduces the firmware

file to less than 900 K. However, the /C: drive Flash disk space is limited on

the ITG-P 24-port line card.

The IP Phone normally does not have to be pre-loaded with the firmware file

because, during normal operation, the IP Phone’s firmware is automatically

upgraded as part of the registration to the LTPS. If the firmware cannot be

upgraded, perhaps due to firewall restrictions, then the IP Phone must be

upgraded with the current firmware version before distributing the IP Phone.