double band on cisco router 2801

[telep]

i have a vpn on a cisco router 2801, via one DT2048 (connected to one serial port). The bandwidth is 2Mbit.
I'd like to double bandwidth.
So i added another DT2048, connected to router through second serial port.
Is it possible to use simultaneously both DT to double band?

 

[rainman]

Are you running PPP encapsulation over your serial links? If so you can run Multilink PPP (MLPPP) to bundle your serial lines together.


-Rainman

 

[telep]

no. HDLC is active on serial ports.
what could happens if i set MLPPP to serial ports?
MLPPP could make problems with voip?