Table 24: Pbx/Ports Config/Analog Hardware; Figure 28: Fxs Ports Signaling Preference; Figure 29: Fxo Ports Acim Settings - Grandstream Networks UCM6510 User Manual

Select "Loop Start" or "Kewl Start" for each FXS port. And then click on "Update" to save the change.
For FXO port, users could manually enter the ACIM settings by selecting the value from dropdown list for
each port. Or users could click on "Detect" for the UCM6510 to automatically detect the ACIM value. The
detecting value will be automatically filled into the settings.
Note:
ACIM setting is very important for the FXO/PSTN line to work properly on the UCM6510. If the users
experience echo, caller ID or disconnecting issue, please make sure to run the ACIM detection to find out
the correct value for impedance setting.
Tone Region
Advanced Settings
Firmware Version 1.0.0.5

Figure 28: FXS Ports Signaling Preference

Figure 29: FXO Ports ACIM Settings

Table 24: PBX/Ports Config/Analog Hardware

Select country to set the default tones for dial tone, busy tone, ring tone
and etc to be sent from the FXS port. The default setting is "United
States of America (USA)".
UCM6510 IP PBX User Manual Page 74 of 192