User`s guide

ZyXEL MAX-200M1 Series User’s Guide
214 Chapter 21 Troubleshooting
21.7 Problems With Multiple SIP Accounts
You can set up two SIP accounts on your ZyXEL Device. By default your ZyXEL Device uses
SIP account 1 for outgoing calls, and it uses SIP accounts 1 and 2 for incoming calls. With this
setting, you always use SIP account 1 for your outgoing calls and you cannot distinguish
which SIP account the calls are coming in through. If you want to control the use of different
dialing plans for accounting purposes or other reasons, you need to configure your phone port
in order to control which SIP account you are using when placing or receiving calls.