That's what I thought too, but no go. I just tried 12.4-15-T9 in both ipbase and entbase. The boot loader shows this:

Smart Init is enabled

smart init is sizing iomem

ID MEMORY_REQ TYPE

00036F 0X00103980 C2651XM Dual Fast Ethernet

0000BC 0X0025178C Four port T1 Inverse Mux for ATM

0X00098670 public buffer pools

0X00211000 public particle pools

TOTAL: 0X005FE77C

So, it sees the card. Once IOS loads though, show inv:

Router#show inv

NAME: "2651XM chassis", DESCR: "2651XM chassis"

PID: C2651XM-2FE , VID: 2.0, SN: JAE#####X##

NAME: "Unknown on Slot 1", DESCR: "Unknown"

PID: , VID: 1.0, SN: FOC#####XX#

No interfaces show up for it either.

Jason

Probably a stupid question, but does the NM-4T1-IMA network module also require that the router have the AIM-ATM installed? I am wondering if that might be the issue?

I had an extra AIM-ATM card, but that did not help. On bootup, I get this:

*Mar 1 00:00:07.660: %PA-3-NOTSUPPORTED: PA in slot1 (Unknown (type 188)) is no

t supported on this image.

Please issue "show diag" in fully loaded IOS image

to get the PA's information and verify if it is supported

by this image, a newer version may be needed.

show diag displays:

Slot 1:

Unknown (type 188) Port adapter

Port adapter is disabled

Port adapter insertion time unknown

EEPROM contents at hardware discovery:

Hardware Revision : 1.0

Top Assy. Part Number : 800-03974-03

Board Revision : D0

Deviation Number : 0-0

Fab Version : 05

PCB Serial Number : FOC#####XX#

RMA Test History : 00

RMA Number : 0-0-0-0

RMA History : 00

Product (FRU) Number : NM-ATM-4T1=

EEPROM format version 4

EEPROM contents (hex):

0x00: 04 FF 40 00 BC 41 01 00 C0 46 03 20 00 0F 86 03

0x10: 42 44 30 80 00 00 00 00 02 05 C1 8B 46 4F 43 30

0x20: 37 32 30 31 47 41 36 03 00 81 00 00 00 00 04 00

0x30: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

0x40: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

0x50: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

0x60: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

0x70: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

They do strange and undue things sometime. Good that you had the perseverance of keep trying.