3Com VCX v7111 User Manual page 146

FXO Settings Screen
Figure 53
Configure the FXO parameters according to
2
Click Submit to save your changes.
3
To save the changes so they are available after a power fail, see
4
FXO Parameters
Table 47
Parameter
Dialing Mode
[IsTwoStageDial]
146
Description
One Stage [0] = One-stage dialing.
Two Stage [1] = Two-stage dialing (default).
Used for IP FXO gateways calls.
If two-stage dialing is enabled, then the FXO gateway seizes one of the
PSTN/PBX lines without performing any dial, the remote user is connected over
IP to PSTN/PBX, and all further signaling (dialing and Call Progress Tones) is
performed directly with the PBX without the gateways intervention.
If one-stage dialing is enabled, then the FXO gateway seizes one of the
available lines (according to Channel Select Mode parameter), and dials the
destination phone number received in INVITE message. Use the Waiting For
Dial Tone parameter to specify whether the dialing should come after detection
of dial tone, or immediately after seizing of the line.
Table 47.
Saving
®
3Com VCX V7111 VoIP Gateway User Guide
Configuration.