User`s manual

SIP User's Manual 5. Web Management
Version 5.0 127 December 2006
5.5.11 Configuring the FXO Parameters
Use this screen to configure the gateway’s specific FXO parameters.
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To configure the FXO parameters, take these 4 steps:
1. Open the ‘FXO Settings’ screen (Protocol Management menu > FXO Settings >
FXO Settings option); the ‘FXO Settings’ screen is displayed.
Figure 5-33: FXO Settings Screen
2. Configure the FXO parameters according to Table 5-33.
3. Click the Submit button to save your changes.
4. To save the changes so they are available after a power fail, refer to Section 5.10.2 on
page 205.
Table 5-33: FXO Parameters (continues on pages 127 to 130)
Parameter Description
Dialing Mode
[IsTwoStageDial]
One Stage
[0] = One-stage dialing.
Two Stage
[1] = Two-stage dialing (default).
Used for IPÆFXO 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 gateway’s 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.