How to register to two servers?

[sunnytan]

1. Brekeke Product Name and version:
Version 2.2.6.2
2. Java version:
1.5
3. OS type and the version:
Windows2003
4. UA (phone), gateway or other hardware/software involved:
gateway
5. Select your network pattern from http://www.brekeke-sip.com/bbs/network/networkpatterns.html :
Pattern 9
6. Your problem:
I have:
GatewayA: 123456 GatewayB: 654321
Brekeke SIP Server: XX.XX.XX.200
Othter SIP Servers: XX.XX.XX.201 and XX.XX.XX.202

I want:
gatewayA: registered to XX.XX.XX.200 and XX.XX.XX.201 at the same time
gatewayB: registered to XX.XX.XX.200 and XX.XX.XX.202 at the same time

How to make dial plan?

[taitan]

Use Brekeke PBX's ARS.

gatewayA and gatewayB register Brekeke SIP Server
Brekeke PBX's ARS registers XX.XX.XX.200 and XX.XX.XX.201.