4RF Aprisa XE User Manual - page 29
About the terminal | 28
Interface card types
Each terminal has eight interface slots labeled A to H. Each slot can be fitted with any interface card
type. Typically, the terminal is delivered pre-configured with the requested interface cards.
The following interface card types are currently available:
Name
Interface card type
Function
QJET
Quad E1/T1 interface card
Four E1 / T1 interfaces (Framed or Unframed).
Q4EM
Quad 4 wire E&M interface card
Four 4 wire E&M voice channels
DFXS
Dual 2 wire FXS interface card
Two 2 wire loop signalling foreign exchange
subscriber (POTS) channels
DFXO
Dual 2 wire FXO interface card
Two 2 wire loop signalling foreign exchange office
channels
HSS High-Speed
Synchronous
interface card
A single high speed serial data channel configured
as synchronous V.24, V.35, X.21, V.36 / RS 449,
or EIA/TIA 530.
QV24
Quad V.24 serial asynchronous
interface card
Four asynchronous V.24/RS232 data channels.