Advanced Features
6-5
By default, the ISDN modem makes calls using the 2 B channels.
Note that there may be cost implications to the use of two B
channels. Check your usage rates with your ser vice providers, such
as the telephone company, Internet Ser vice Provider, or online
ser vice provider.
Storing Multilink Endpoint Identifiers in
S registers
Some Multilink PPP implementations require the use of a Multilink
PPP option called the Multilink Endpoint Identifier. The Multilink
Endpoint Identifier is a number that the Netopia ISDN Modem uses
to distinguish its Multilink PPP calls to a remote router from other
Multilink PPP calls. The default Multilink Endpoint Identifier for the
ISDN modem is the first B Channel’s director y number (as entered
in S register 51). The Multilink Endpoint Identifier must be unique in
order to identify the ISDN modem’s PPP call. This Multilink Endpoint
Identifier also identifies the Multilink session and allows the remote
router to add or subtract B Channels to that Multilink PPP session
when the ISDN modem requests it.
You probably won’t need to change the default settings for the
S registers that control the Multilink Endpoint Identifier (S registers
82 and 83) unless other wise specified by your systems
administrator or ISP. The defaults are S82=5 (Public Switched
Network Director y Number) and S83=(initially empty). (If you have
S82 set to the default value of 5, leave S83 empty. The ISDN
modem will later automatically fill in S83 with the director y number
entered in S register 51.) If you do change the Multilink Endpoint
Identifier, however, make sure the number you specify is a “unique”
number to the equipment you are dialing into so the equipment will
not confuse your Multilink PPP call with another call.
