These are the supported interfaces on a 7204:
Ethernet 10BASE-T and 10BASE-FL
Fast Ethernet 100BASE-T (RJ-45 and MII)
Gigabit Ethernet
Token Ring (half and full duplex)
Synchronous serial ISDN BRI, PRI, HSSI, T3, E3
Multichannel T1, ISDN PRI
Multichannel E1, ISDN PRI
Multichannel T3, E3
Multichannel STM-1
Packet Over SONET (POS)
Dynamic Packet Transport (DPT)
ATM (single-mode and multimode)
ATM-CES
Digital Voice Port Adapter, Enhanced
Mix-enabled T1/E1
Integrated Service Adapter (ISA)
VPN Acceleration Module (VAM)
See link: http://www.cisco.com/en/US/products/hw/routers/ps341/products_data_sheets_list.html
Steve