Draytek 2800 用户指南

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页码 197
 
Vigor2800 Series User’s Guide 
116
Yes to invoke this function and enter the IP address in the field of 
Fixed IP Address
Fixed IP Address 
Type the IP address. 
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If you have more than one ISP, press this link to configure two ISP dialup profiles. You will 
be able to dial to both ISPs at the same time. This is mainly for those ISPs that do not 
support Multiple-Link PPP (ML-PPP) function. In such cases, dialing to two ISPs can 
increase the bandwidth utilization of the ISDN channels to 128kbps data speed. 
 
Most configuration parameters are the same as those of the previous part. This screen 
provides a checkbox to enable the Dual ISPs function and adds the secondary ISP Setup 
section field. Check the corresponding box and enter the second ISP information. About the 
details please refer to the descriptions of the previous part. 
 
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Virtual TA means the local hosts or PCs in the network that uses popular CAPI-based 
software such as RVS-COM or BVRP to access the router as a local ISDN TA for sending or 
receiving FAX messages over the ISDN line. Basically, it is a client/server network model. 
The built-in Virtual TA server handles the establishment and release of connections. The 
Virtual TA client, which is installed on the local hosts or PCs, creates a CAPI-based driver to 
relay all CAPI messages between the applications and the router CAPI module. Before 
describing the configuration of Virtual TA in the Vigor routers, please notice the following 
limitations. 
The Virtual TA client only supports Microsoft
TM
 Windows 95 
OSR2.1/98/98SE/Me/2000 platforms.   
The Virtual TA client only supports the CAPI 2.0 protocol and has no built-in FAX 
engine.  
One ISDN BRI interface has two B channels. The maximum number of active clients is 
also two. 
Before you configure the Virtual TA, you must set the correct country code.