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A: For SIP phone call out, there is no need to configure the virtual server. But for receiving SIP phone call, we need to add UDP port, 5060, 5062, and 5064... in the virtual server. Normally, it should be 5060 if you have one SIP phone only.
A: The BiPAC Serials are supporting UPnP now. If your PC has installed UPnP components, Windows will inform you automatically when the router is startup. The default icon named as 'DSL IGD'. If you double click the icon, you can enter the Web GUI directly. By default, Windows ME did not installed UPnP. User has to install (or enable) it. It seems no UPnP for Windows 2000 while Windows XP need to enable. The one advantage of UPnP is 'UPnP NAT Transversal'. If some applications is UPnP-aware, it can negotiate with router to open 'Virtual Server' ports implicitly, i.e. User did not need to configure the Virtual Server by himself.

One-to-one NAT: translate between a public IP address and a specific private IP address

Note: There is only be configured by CLI. No web configuration provided.

Environment Example:
- ISP provide you a public (or global) pool, e.g. 61. 210.39.1 to
- Your private IP address is ranged as

- After the basic configuration, there will be one 'external' interface and one 'internal' interface. You can check by "security list interfaces" CLI command. Assume the 'external' interface named as 'ipwan'
- Adding the global IP pool into 'external' interface as "nat add globalpool gp1 ipwan internal endaddress"
- Adding one-to-one mapping for redirect PING packet as example "nat add resvmap rm1 globalip ipwan icmp"
- You can change 'icmp' above to all for mapping all protocols
- Delete mapping by using "nat delete resvmap" CLI command.


Currently only CLI command can support the settings of Multi-NAT. It is useful when you have over than one public IP address and want to setup two servers at LAN site. And these servers will provide the same service and use standard port number for outside network, like WEB server(HTTP 80). Below is the example for two public IPs and map to two different PCs at internal network.
Public IP1:
Public IP2:
WEB Server1:
WEB Server2:

For first one, you can refer the section of Virtual Server in user manual. And it can be set via WEB GUI.
For second one, you have to type CLI command as below.
Step 1:‘nat add globalpool <gp1> <ipwan> internal subnetmask’or ‘nat add globalpool <gp1> <ipwan> internal endaddress’
Syntax: nat add globalpool <name> <interfacename> {internal|dmz} <ipaddress> {subnetmask <mask>|endaddress <address>}

Step 2:‘nat add resvmap <rm2> globalip <ipwan> tcp 80’

Syntax: nat add resvmap <name> globalip <interfacename> <globalip> <internalip> {tcp|udp} <portno> [<2ndportno> [<localportno> [2ndlocalportno]]]

<gp1>, <ipwan>, <rm2> are names, defined by users.
The concept is adding a global (or said public) IP pool in WAN side and let NAT module know it. Then, create another kind of Virtual Server to map it. If possible, he could use 'all' instead of 'tcp 80' at first stage to test the reach ability.


Please make sure something with your ISP before you use ADSL device:

  1. Is it Annex A, B or U-R2?
  2. WAN protocol? PPPoA, PPPoE, or RFC1483 llcbridged/DHCP client?
  3. PVC: VPI? VCI?

You must configure correct parameters to use ADSL.

A: Shortly, Annex A is "ADSL over POTS"; Annex B is "ADSL over ISDN". They are used in different telephone line depending on the telco or country. The U-R2 is used in Germany.
A: 'Dying Gasp' is one special signal to tell DSLAM that CPE is going to 'die'.
Normally, when CPE losing of power, it will send 'Dying Gasp' to DSLAM such that DSLAM may do some housekeeping or else.
So, if CPE want to implement Dying Gasp, it need a 'big' capacitor to store a little power to be used during losing power. But, DSLAM still have other methods to monitor the CPE existences.
Normally, ADSL PCI cards or ADSL USB modems do not implement Dying Gasp.
A: BiPAC 702 AE can automatically work with different MTU size with ISP. Therefore, the PCI ADSL modem card doesn't provide any way to modify the MTU size.