Troubleshooting IP telephony problems F-5
Appendix F: Troubleshooting
Wave Server Installation Guide
9. In the next screen, click Search for and install the hardware automatically, and then click
Next to continue.
10. When prompted to specify the modem manufacturer and model, select
Vertical
Communications
and Surf Modem. Click Next to continue.
11. When prompted to select the port on which to install the modem, click
Selected ports and
COM100. Click Next to continue.
12. Follow the on-screen instructions to complete the modem installation. You do not need to
restart the Wave Server for your changes to take effect.
Troubleshooting IP telephony problems
For the most complete and current information on troubleshooting IP telephony problems,
contact your Wave provider.
One-way audio on a SIP trunk call.
Symptom: A user experiences one-way audio on calls involving a SIP trunk.
Solution: Putting the affected call on hold and then retrieving it usually restores two-way audio
on the call.
Troubleshooting phone problems
Troubleshooting SIP phone problems
Pressing a Call Appearance button to answer a call on a 5-series Aastra SIP phone
may not route audio to the phone’s speaker.
This problem occurs if the new call is received when another call is on hold and the handset is
on hook.
Solution: Use the handset to listen to the call.
The time is displayed incorrectly on a SIP phone.
Symptom: Wave uses its own time server that you specify during the installation process (as
described in “Configuring the time service used by Wave ISM” on page 7-20), and disables the
Win32Time service. SIP phones may display the incorrect time because the Win32Time service
has been inadvertently re-enabled, and is interfering with Wave’s time server.
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