ASCEND COMMUNICATIONS, INC.

MAX 2000 T1/PRI

Card Type                  T1, Ethernet
Chip Set                   Unidentified
I/O Options                AC power connector, 15-pin AUI port, 9-pin
                           serial port,

                           T1 network interface via RJ-48 connector (2),
                           alarm relay terminal block, RJ-45 UTP interface,
                           data port via 44-pin connector,
Wiring Type                RJ-48 T1

                           RJ-45 Unshielded Twisted Pair
T1 Transfer Rate           1.544Mbps
T1 Protocol                AMI, B8ZS
Frame type                 D4, ESF
Data Bus                   External

[Image]

                                CONNECTIONS

          Function             Label           Function             Label

  AC power connector           CN1     RJ-45 UTP connector          CN5

  Serial port                  CN2     RJ-48 T1 interface           CN6

  44-pin DTE port              CN3     RJ-48 T1 interface           CN7

  15-pin AUI interface         CN4     Alarm relay terminal         CN8
                                       block

                             DIAGNOSTIC LED(S)

   LED         Color          Status                 Condition

   PWR      Unidentified        On                  Power is on

   PWR          Unidentified    Off                Power is off

   ACT      Unidentified        On           Ethernet interface active

   ACT          Unidentified    Off         Ethernet interface inactive

   YA1      Unidentified        On        Yellow alarm condition detected
                                                 on network line 1

   YA1          Unidentified    Off          Yellow alarm condition not
                                            detected on network line 1

   FLT          Unidentified    On             Self test in progress

   FLT      Unidentified     Blinking     Device is not functional due to
                                              hardware fault or error

   FLT          Unidentified    Off            Device is functional

  COLL      Unidentified        On        Collision detected on Ethernet

  COLL          Unidentified    Off          Collision not detected on
                                                     Ethernet

   LA1          Unidentified    On           Link is active on line 1

   LA1      Unidentified     Blinking     Device unable to establish line
                                             1 communications, possible
                                                configuration error

   LA1          Unidentified    Off              Link is inactive

   AUI      Unidentified        On             AUI interface is good

   AUI          Unidentified    Off           AUI interface is broken

   RA1      Unidentified        On         Improper receive signal or no
                                          signal detected on network line
                                                         1

   RA1          Unidentified    Off        Improper receive signal or no
                                          signal detected on network line
                                                         1

  COAX      Unidentified        On         10Base - 2 interface enabled

  COAX          Unidentified    Off        10Base - 2 interface disabled

   RA2      Unidentified        On         Improper receive signal or no
                                          signal detected on network line
                                                         2

   RA2          Unidentified    Off        Improper receive signal or no
                                          signal detected on network line
                                                         2

   UTP      Unidentified        On           10BaseT interface enabled

   UTP          Unidentified    Off         10BaseT interface disabled

   YA2      Unidentified        On        Yellow alarm condition detected
                                                 on network line 2

   YA2          Unidentified    Off          Yellow alarm condition not
                                            detected on network line 2

   LA2          Unidentified    On           Link is active on line 2

   LA2      Unidentified     Blinking     Device unable to establish line
                                             2 communications, possible
                                                configuration error

   LA2          Unidentified    Off              Link is inactive

[Image]

MULTIBAND INVERSE MULTIPLEXING CARD

                                CONNECTIONS

         Function            Label            Function            Label

  Serial host port            CN9      Serial host port           CN11
  (44-pin connector)                   (44-pin connector)

  Unidentified                CN10

  Note:

  Serial host ports may be configured for RS-449, V.35, or X.21
  interface. Also available with 6 serial host ports.

[Image]

HOST/6 CARD

                                CONNECTIONS

          Function             Label           Function             Label

  9-pin serial port            CN12    9-pin serial port            CN13

                       MISCELLANEOUS TECHNICAL NOTES

  MAX 200 T1/PRI can accommodate two expansion modules. Available modules
  are the two options shown above, as well as the Digital Modem and V.110
  cards.