User's Manual for
PLANET ISDN Router Product
IRT-401
Chapter 8. IRT-401 Configuration ¡V Analogic Devices
This chapter provides information on how to set-up MSN and the functions in Voice Call Preemption and Call Bumping.
Topics covered:
Multiple Subscriber Numbering allows an ISDN phone number to be assigned to each of the analogue ports, giving you 2 separate phone lines. An example would be if you had a Fax machine and a standard phone connected, you can route incoming fax calls to the correct analogue port that your fax machine is on.
Figure 8-1. MSN Example
Open the IRT-401 NMS software and login to the router. MSN can be configured either from the Quick Config menu, or the Local/ISDN menu. Select the menu of your choice and enter your two phone numbers into the required "TEL" fields. For example, if you have a telephone attached to analogue port 1, type the ISDN number you wish to use for this phone in the field "TEL 1" . Do the same for "TEL 2". Click "Update" to make changes effective.
This function is used in conjunction with MP. If both B channels are busy with Internet/Intranet Access, using this function disconnects the second B line in order to allow you to make an outgoing analogue call. This will not cause your Internet/Intranet transfer to loose data, but it will reduce the available bandwidth for your data transfer from 128Kbps to 64Kbps. When you are done with the phone call, and the data transfer rate exceeds the threshold for adding a second line for the time specified, the second line will be added again.
When both of the B channels are busy for Multilink PPP, One B channel (Second PPP) can be disconnected by your ISDN service provider when an analog call is dialing-in. You can then pick up any dial-in analog telephone without any loss when you use Multilink PPP.
Your ISDN service provider also needs to support this function, else the remote analog dial user will get a busy tone from the ISDN service provider, and the IRT-401 will not drop the second PPP to allow the remote analog user to dial-in.
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Copyright (C) 1999 PLANET Technlogy Corporation