Nortel Networks SRG50 - Manual (Page 83)

83
SRG50 Configuration Guide
Chapter 8
Troubleshooting
Potential problems, probable causes, and suggested solutions for SRG-specific configuration and
operating troubles are categorized under the following topics:
• IP telephone troubleshooting on page 83
• IP terminal details on page 84
• Probable causes for redirection failure on page 85
• Troubleshooting fallback to local mode on page 86
• IP telephones manual redirection on page 86
• Cannot clear alarms using an alarm set on page 87
IP telephone troubleshooting
The table IP telephone troubleshooting on page 83 provides issues and solutions for IP Phone
troubleshooting.
Table 17 IP telephone troubleshooting (Sheet 1 of 2)
Issue / Problem Probable Cause / Solution
Telephone does not connect to
system If an IP telephone does not display the text Connecting to server
within two minutes after power up, the telephone was unable to establish
communications with the SRG. Double check the IP configuration of the
telephone and the IP connectivity to the SRG (cables, switches, and so on).
Slow connection between the
handset and the Business
Communications Manager If the connection between the IP client and the SRG is slow (ISDN, dialup
modem), change the preferred codec for the telephone from G.711 to G.729.
Block individual IP sets from dialing
outside the system. If you want to block one or more IP telephones from calling outside the system,
use Restriction filters and assign them to the telephones you want to block.
Restriction filters are set up under Configuration > Telephony > Call Security >
Restriction Filters.