What do I need for multi frame relay to work?

I have a customer that is running a Cisco 2610 and using frame relay for their T-1.  They want to bring in a second T-1 and use multi frame relay to "bond" them.  Under the interface config options, MFR is not listed.  Does anyone know what feature pack I need to be able to get this option?
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Cisco Feature Navigator says you need 12.3(26) at a minimum to run MFR.  Looks like if you have a 2610 "regular" you need an IP PLUS feature set but if you have a 2610XM, IP BASE should work.  If you are running the T train, 12.2(15)T16 should work.  Requirements for 12.3(26) are 64 RAM 16 Flash.  Can you post a "show version" from the router.

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swolfersbergerAuthor Commented:
Cisco Internetwork Operating System Software
IOS (tm) C2600 Software (C2600-JS-M), Version 12.0(2)XC2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
TAC:Home:SW:IOS:Specials for info
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Wed 20-Jan-99 19:58 by rnapier
Image text-base: 0x80008088, data-base: 0x80B91C54

ROM: System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)
ROM: C2600 Software (C2600-JS-M), Version 12.0(2)XC2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

ROUTER_01 uptime is 3 weeks, 4 days, 21 hours, 34 minutes
System restarted by reload
System image file is "flash:c2600-js-mz.120-2.XC2"

cisco 2610 (MPC860) processor (revision 0x202) with 22528K/2048K bytes of memory.
Processor board ID JAD04500RQB (215888222)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software copyright 1990 by Meridian Technology Corp).
Emulation software.
1 Ethernet/IEEE 802.3 interface(s)
2 Serial network interface(s)
32K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

Definitely running an IOS that doesn't support it.  The problem is you only have 32MB of RAM and 8MB of Flash so you can't run 12.3(x) that supports MFR.  You will need to either upgrade the RAM and Flash or replace the router (unfortunately).
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