3Com V7111 - VCX 4 Channels Analog FXO Media Gateway User Manual page 84

SIP Parameters
Table 19
INI File Field Name
*
GUI Parameter Name
TargetOfChannel#
(Automatic Dialing Table)
IsUseFreeChannel
(Selects Next Available Channel)
IsTwoStageDial
84
Valid Range and Description
Automatic dialed phone number.
The automatic dialed number, used if OFF HOOK detected in FXS
channel, or ringing signal is detected in FXO channel.
Applicable when IsDialNeeded = 0.
Its format: TargetOfChannel<channel> = <number>.
Example: TargetOfChannel1 = 123
The parameter, if used, should be defined per Gateway FXS or
FXO port (channel).
0 = Select the FXO channel according to destination phone number
received in INVITE message, (default)
1 = Select the next available FXO channel
Used for IP VCX V7111 FXO calls
The next available FXO channel is selected, out of the Gateway
channels defined in Hunt group table.
When using one stage dialing, (IsTwoStageDial =0),
IsUseFreeChannel should be equal to 1.
For one stage dialing the VCX V7111 FXO selects the next free
channel, and dials into the FXO line the destination phone number
received in INVITE message.
0 = One stage dialing
1 = Two Stage Dialing (default)
Used for IP VCX V7111 FXO calls
For Two Stage Dialing the VCX V7111 FXO seizes the PSTN/PBX
line, without performing any dial, the remote User is connected
over IP to PSTN/PBX, and all further signaling (dialing and call
progress tones) is done directly with the PBX without Gateway
intervention.
For One Stage Dialing VCX V7111 FXO seizes the next available
channel (IsUseFreeChannel should be 1), and dials the destination
phone number received in INVITE message. Use the
IsWaitForDialTone parameter to specify whether the dialing should
come after detection of dial tone, or immediately after seizing of the
line.
3Com VCX V7111 VoIP SIP Gateways User Manual