enter a common password and two codes. You get this information, for example, from your
Internet Service Provider (ISP) or the system administrator at your head office. If the data
you entered on your device is the same as the caller's data, the call is accepted. The call is
rejected if the data is not the same.
Callback
The callback mechanism can be used for every connection over an ISDN or over an AUX
interface to obtain additional security regarding the connection partner or to clearly allocate
the costs of connections. A connection is not set up until the calling party has been clearly
identified by calling back. Your device can answer an incoming call with a callback or re-
quest a callback from a connection partner. Identification can be based on the calling party
number or PAP/CHAP/MS-CHAP authentication. Identification is made in the former case
without call acceptance, as the calling party number is transferred over the ISDN D-
channel, and in the latter case with call acceptance.
Channel Bundling
Your device supports dynamic and static channel bundling for dialup connections. Channel
bundling can only be used for ISDN connections for a bandwidth increase or as a backup.
Only one B channel is initially opened when a connection is set up.
Dynamic
Dynamic channel bundling means that your device connects other ISDN B channels to in-
crease the throughput for connections if this is required, e.g. for large data rates. If the
amount of data traffic drops, the additional B-channels are closed again.
If devices from other manufacturers are to be used at the far end, ensure that these sup-
port dynamic channel bundling for a bandwidth increase or as a backup.
Static
In static channel bundling, you specify right from the start how many B channels your
device is to use for connections, regardless of the transferred data rate.
17.1.1 PPPoE
In the
WAN
->
In Dialup
->
PPPoE
menu, a list of all PPPoE interfaces is displayed.
PPP over Ethernet (PPPoE) is the use of the Point-to-Point Protocol (PPP) network pro-
tocol over an Ethernet connection. Today, PPPoE is used for ADSL connections in Ger-
many. In Austria, the Point To Point Tunnelling Protocol (PPTP) was originally used for AD-
SL access. However, PPPoE is now offered here too by some providers.
Funkwerk Enterprise Communications GmbH
17 WAN
R1xxx/R3xxx/R4xxx
239
