Nortel SRG50, Руководство по настройке

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98 Chapter 8 Troubleshooting
N0060720
Probable causes for redirection failure
The IP telephone registration to the main office call server can fail due to improper configuration
or lack of WAN connectivity. When a registration failure occurs, the error code and description is
shown in the status field for the IP telephone in the IP Terminal Details field (refer to
“IP terminal
details” on page 96 ); the IP telephone remains registered with the SRG50 in local mode operation.
Definitive causes for registration failure depend on the main office call server.
For the CS 1000, causes can include:
• The registration password entered at the SRG50 does not match the installer password
at the main office.
• The main office is unreachable.
• There is no endpoint configured for the user id or branch user id / TN combination.
• There is set firmware incompatibility between the remote and local offices.
• The actual IP telephone set type at the SRG50 does not match MOTN set type at the
main office.
• The user id is registered and not idle.
• The user id entry in the gatekeeper database points back to the originating node.
For the CS 2000, there are fewer main office parameters to configure on the SRG50. As a result,
there are fewer places where configuration may be an issue, but this also means that the difference
between a WAN problem versus an address configuration problem is not as evident.
Troubleshooting fallback to local mode
If the system reverts to local mode and the problem is not the WAN link to the main office, check
for:
a IP telephone firmware discrepancies
The SRG50 supports automatic firmware updates. These are covered in the
server-specific chapters (
“CS 1000 considerations” on page 33 and “CS 2000
considerations” on page 53 ). However, the possibility exists that a non-network
reversion to local mode is caused when the IP telephone firmware has been
updated on the main office and not on the SRG50.
Check the IP Terminal Details (refer to “IP terminal details” on page 96 ) for this
Status :
Firmware is Out of Sync with the Main Office Call Server
The preferred way of handling firmware upgrades is to install the patch onto the
SRG50 first, then on the main office equipment.
When the IP telephone firmware is updated on the main office, the main office
redirects all SRG50 IP telephones back to the SRG50 for a firmware upgrade. If
the SRG50 has already been patched with the new firmware, the telephone is
upgraded when it registers with the SRG50. Once the telephone has the new