require module info on 3600 series router [7:43925]

Hi everybody, I am here in Pakistan and we have E1 running at our ISP setup. OUR Telco provide E1 facility on G703/704I want to terminate these E1 lines directly into my router currently I am using CISCO 5300 for that purpose but I need compatiable module for my 3600 series routers as well can an

2v Voice card [7:45747]

ternetwork Operating System Software IOS (tm) 3600 Software (C3620-I-M), Version 12.0(7), RELEASE SOFTWARE (fc1) Copyright (c) 1986-1999 by cisco Systems, Inc. Compiled Thu 14-Oct-99 14:26 by phanguye Kindly inform if it has to do with IOS or my card is faulty. any help will be apprciated Regards,