HP ProCurve Secure Router 7203 dl Advanced Management And Configuration Manual page 65

You should have already configured the physical interfaces. If you have not,
see the Basic Management and Configuration Guide, Chapter 4: Configur-
ing E1 and T1 Interfaces for instructions. To bind these interfaces to the PPP
interface, you need the following information:
type of carrier line (E1 or T1)
dl module slot for the carrier line's module
port number for the interface to which the line connects
time division multiplexing (TDM) group number
The TDM group number defines the range of channels used by an E1- or T1-
carrier line. The carrier lines that will be aggregated can use the same or a
different TDM group number, but these groups must use the same number of
channels.
You can enter the bind command either from the global or the PPP interface
configuration mode contexts:
Syntax: bind <bind number> [e1 | t1] <slot>/<port> <tdm group number> ppp
<interface number>
Use a different bind number for each carrier line you want to bundle. For
example, you might enter:
ProCurve(config)# bind 1 e1 1/1 1 ppp 1
ProCurve(config)# bind 2 e1 1/2 1 ppp 1
ProCurve(config)# bind 3 e1 2/1 1 ppp 1
Increasing Bandwidth
Configuring MLPPP
2-7