Polycom DOC2232A - Manual (Page 13)

Chapter 1 - Before You Begin
1-5
External Communications
Data rates 6 Kbps–1920 Kbps (E1)
Network interfaces ISDN: T1 PRI, E1 PRI, Multirate ISDN (H0),
NFAS, Leased Lines: T1/E1
T1-CAS lines
H.323 & SIP: LAN
Clock synchronization Synchronizes to external network
Local/Remote External Equipment
Operator workstations LAN/RS-232/Modem/Internet
Reservation systems LAN/Internet/Modem
Table 1-1: MGC-25 Unit Specifications