Version 6.2  227  February 2011 
SIP User's Manual   3. Web-Based Management 
 
Specify the following: 
♦  PPTP Server Host Name or IP Address 
♦  Login User Name 
♦  Login Password 
♦  Internet Protocol - select the method used by your ISP for assigning an IP 
address. 
•  'Layer 2 Tunneling Protocol (L2TP)': 
Figure  3-120: L2TP WAN Connection Type 
 
Specify the following: 
♦  L2TP Server Host Name or IP Address 
♦  Login User Name 
♦  Login Password 
♦  Internet Protocol - select the method used by your ISP for assigning an IP 
address 
3.  For advanced WAN settings, click the Click here for Advanced Settings link. For a 
detailed description of configuring advanced settings, see ''Editing Existing 
Connections'' on page 328. 
 
3.3.3.2.2  Configuring T1 WAN Interface 
The T1 WAN interface can be configured to transmit/receive data using IP over Point-to-
Point Protocol (PPP), IP over High-Level Data Link Control (HDLC), or IP over Multilink 
Point-to-Point Protocol (also referred to as ML-PPP, MP, MPPP, MLP, or Multilink) framing. 
The WAN connection must contain a physical interface (T1) and a Layer-2 protocol (PPP, 
HDLC, or ML-PPP). The physical interface provides the actual bandwidth between the 
device and the network provider. The Layer 2 protocol defines how the data is packaged 
and presented on the physical interface. Layer 2 protocols must be configured to match the 
protocol provided on the circuit.