User's Manual 412 Document #: LTRT-12809
Mediant 800 MSBR
29.14.1 FXO Operations for IP-to-Tel Calls
The FXO device provides the following operating modes for IP-to-Tel calls:
One-stage dialing (see 'One-Stage Dialing' on page 412)
• Waiting for dial tone (see 'Two-Stage Dialing' on page 413)
• Time to wait before dialing
• Answer supervision
Two-stage dialing (see 'Two-Stage Dialing' on page 413)
Dialing time: DID wink (see 'DID Wink' on page 413)
29.14.1.1 One-Stage Dialing
One-stage dialing is when the FXO device receives an IP-to-Tel call, off-hooks the PBX
line connected to the telephone, and then immediately dials the destination telephone
number. In other words, the IP caller doesn't dial the PSTN number upon hearing a dial
tone.
One-stage dialing incorporates the following FXO functionality:
Waiting for Dial Tone: Enables the device to dial the digits to the Tel side only after
detecting a dial tone from the PBX line. The ini file parameter IsWaitForDialTone is
used to configure this operation.
Time to Wait Before Dialing: Defines the time (in msec) between seizing the FXO
line and starting to dial the digits. The ini file parameter WaitForDialTime is used to
configure this operation.
Note: The ini file parameter IsWaitForDialTone must be disabled for this mode.