As per my informations, upgrading of Flash in Cinsco 1751 is not possible.

Is there any other way, where I do not have to upgrade the memory.

No memory upgardes for 1750.

http://www.cisco.com/en/US/products/hw/routers/ps221/prod_configuration_guide09186a0080099429.html

HTH, Please rate if it does.

-amit singh

You need to upgrade the ram which appear is possible.

You should be able to boot the router from a TFTP server. Not sure I would do this for a production router but i have done it many times in the lab.

how about my version? could an FXS or FXO card can work without upgrading the mem or IOS? Please see below

Cisco Internetwork Operating System Software

IOS (tm) C1700 Software (C1700-K8O3SY7-M), Version 12.2(8)T5, RELEASE SOFTWARE)

TAC Support: http://www.cisco.com/tac

Copyright (c) 1986-2002 by cisco Systems, Inc.

Compiled Fri 21-Jun-02 19:24 by ccai

Image text-base: 0x80008108, data-base: 0x80D2EACC

ROM: System Bootstrap, Version 12.2(1r)XE1, RELEASE SOFTWARE (fc1)

ROM: C1700 Software (C1700-Y-M), Version 12.2(13)T1, RELEASE SOFTWARE (fc1)

cisco1751 uptime is 17 hours, 30 minutes

System returned to ROM by power-on

System image file is "flash:c1700-k8o3sy7-mz.122-8.T5.bin"

cisco 1751 (MPC860P) processor (revision 0x600) with 36864K/12288K bytes of mem.

Processor board ID JAD06390282 (3061614917), with hardware revision 0000

MPC860P processor: part number 5, mask 2

Bridging software.

X.25 software, Version 3.0.0.

Basic Rate ISDN software, Version 1.1.

1 Ethernet/IEEE 802.3 interface(s)

1 FastEthernet/IEEE 802.3 interface(s)

1 ISDN Basic Rate interface(s)

1 Virtual Private Network (VPN) Module(s)

32K bytes of non-volatile configuration memory.

16384K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

You will not be able to use DSPs, voice cards, or voice protocols without a voice image.

For the 1700 you can identify a voice image if it has a 'v' in the IOS name.

hth,

nick