ZyXEL Communications VOP1372G-61 - Phone Calls; Management and Configuration

Chapter 3 Troubleshooting
VOP1372G-61 User’s Guide
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3.2 Phone Calls
I cannot make or receive H.248 phone calls on a phone connected to the VOP.
3.3 Management and Configuration
The line card is not manageable.
The line card always uses the default configuration. Any changes you made to the line card are
stored on the MSC. By default, the MSC is allowed to manage every line card. Use the
lcman show
command on the MSC to see a line card’s connection status. If you still cannot manage the line card
from the MSC, the line card’s configuration file may be damaged or the firmware may be old, you
may need to restore the default configuration file or upload new firmware using the line card’s
console port.
Table 12 Phonecall Troubleshooting
STEPS CORRECTIVE ACTION
1 Ensure that the hardware is correctly installed and functioning as described in the IES User’s
Guide.
Ensure that the VOP is running H.248 firmware.
Ping the H.248 media gateway controller from the line card to ensure that it is reachable.
2 Check to see whether the port is successfully registered with the H.248 MGC. Use the show
linestat <slot-port> command to see if a port is in service (registered) or out of service (not
registered).
3 The line card or the port may be disabled.
Use the lcman show command to check the slot status, and the lcman enable <slot> command
to activate a slot.
Use the port show <slot-port> command to check the port status, and the port enable
<slot-port> command to activate a port.
4 The port may be set to use the wrong virtual media gateway or DSP profile. Use the port h248
set <slot-port> <mg-name> <dsp-profile> command to set the port to use the correct
profiles.
5 The H.248 profile, virtual media gateway or DSP profile may be mis-configured.
Use the profile voip h248 show [<name>] command to check the H.248 profile.
Use the voip h248 mg show * command to check all virtual media gateways.
Use the profile voip dsp show [<name>] command to check the DSP profile.
6 Check any hardware between the phone and the VOP. Try using another telephone, another port
on the VOP, or both. Run the MLT (Metallic Line Test) on the relevant port (use the diagnostic
mlt test commands).