ASCEND COMMUNICATIONS, INC.

MULTIBAND PLUS - SW56

Card Type                 CSU
Chip Set                  Unidentified
I/O Options               AC power connector, power switch, serial port,

                          network interface via RJ-48 connector (8),

                          palmtop port via RJ-12 connector (2),data port
                          via 44-pin connector (4)
Wiring Type               RJ-48 Unshielded Twisted Pair
Network Transfer Rate     Unidentified
Data Bus                  External

[Image]

                                CONNECTIONS

         Function             Label            Function            Label

  AC power connector           CN1     RJ-48 network interface      CN9
                                       - line 1

  Serial port                  CN2     RJ-48 network interface     CN10
                                       - line 2

  44-pin DTE port 1            CN3     RJ-48 network interface     CN11
                                       - line 3

  RJ-12 palmtop connector      CN4     RJ-48 network interface     CN12
                                       - line 4

  RJ-12 palmtop connector      CN5     RJ-48 network interface     CN13
                                       - line 5

  44-pin DTE port 2            CN6     RJ-48 network interface     CN14
                                       - line 6

  44-pin DTE port 3            CN7     RJ-48 network interface     CN15
                                       - line 7

  44-pin DTE port 4            CN8     Power                        SW1

                              DIAGNOSTIC LEDS

   LED      Color        Status                   Condition

   PW       Green          On                    Power is on

   PW           Green      Off                   Power is off

   ER           Red        On               Self test in progress

   ER           Red     Blinking        Device is not functional due to
                                                fault or error

   ER           Red        Off               Device is functional

   P1       Green          On                Channel 1 is active

   P1           Green   Blinking      Device is in diagnostic mode. BERT,
                                     auto-BERT, remote loopback, or local
                                          loopback test in progress

   P1           Green      Off              Channel 1 is inactive

   P2       Green          On                Channel 2 is active

   P2           Green   Blinking      Device is in diagnostic mode. BERT,
                                     auto-BERT, remote loopback, or local
                                          loopback test in progress

   P2           Green      Off              Channel 2 is inactive

   P3       Green          On                Channel 3 is active

   P3           Green   Blinking      Device is in diagnostic mode. BERT,
                                     auto-BERT, remote loopback, or local
                                          loopback test in progress

   P3           Green      Off              Channel 3 is inactive

   P4       Green          On                Channel 4 is active

   P4           Green   Blinking      Device is in diagnostic mode. BERT,
                                     auto-BERT, remote loopback, or local
                                          loopback test in progress

   P4           Green      Off              Channel 4 is inactive

   L1       Green          On               Link is good on line 1

   L1           Green   Blinking        Connection established in line
                                     profile, but calls cannot be sent or
                                              received on line 1

   L1           Green      Off             Link is broken on line 1

   L2       Green          On               Link is good on line 2

   L2           Green   Blinking        Connection established in line
                                     profile, but calls cannot be sent or
                                              received on line 2

   L2           Green      Off             Link is broken on line 2

   L3       Green          On               Link is good on line 3

   L3           Green   Blinking        Connection established in line
                                     profile, but calls cannot be sent or
                                              received on line 3

   L3           Green      Off             Link is broken on line 3

   L4       Green          On               Link is good on line 4

   L4           Green   Blinking        Connection established in line
                                     profile, but calls cannot be sent or
                                              received on line 4

   L4           Green      Off             Link is broken on line 4

   L5       Green          On               Link is good on line 5

   L5           Green   Blinking        Connection established in line
                                     profile, but calls cannot be sent or
                                              received on line 5

   L5           Green      Off             Link is broken on line 5

   L6       Green          On               Link is good on line 6

   L6           Green   Blinking        Connection established in line
                                     profile, but calls cannot be sent or
                                              received on line 6

   L6           Green      Off             Link is broken on line 6

   L7       Green          On               Link is good on line 7

   L7           Green   Blinking        Connection established in line
                                     profile, but calls cannot be sent or
                                              received on line 7

   L7           Green      Off             Link is broken on line 7