SIP User's Manual  228  Document #: LTRT-12804 
  Mediant 800 MSBG 
 
 
 
Notes:  
•  Each physical T1 link is configured separately. 
•  Local-line loopback on the T1 WAN interface can only be configured 
using the device's CLI. In this loopback, packets from the Tx line 
interface connect to the Rx line interface. The maximum time of this 
loopback is enabled and configured using the loopback CLI command. 
For a detailed description of CLI configuration, refer to the MSBG Series 
CLI Reference Guide. 
•  Bit error rate (BER) testing on the T1 WAN interface for the far-end 
transmission link can only be configured using the device's CLI. The BER 
Test is done by generating and detecting both pseudorandom and 
repeating bit patterns. The test is enabled using the ber-test CLI 
command. For a detailed description of CLI configuration, refer to the 
MSBG Series CLI Reference Guide. 
 
 
3.3.3.2.2.1  PPP over T1 WAN 
The procedure below describes how to configure PPP over T1 WAN interface. 
¾  To configure PPP over T1 WAN interface: 
1.  Open the 'WAN Access' page (Configuration  tab > Data menu > WAN Access > 
Settings). 
Figure  3-121: WAN Access Page for T1 WAN Interface 
 
2.  From the ‘Connection Type’ drop-down list, select "PPP Over T1"; the page refreshes, 
displaying the relevant parameters: 
Figure  3-122: PPP Over T1 
 
3.  In the ‘Login User Name’ and ‘Login Password’ fields, enter the username and 
password provided by your Internet Service Provider (ISP), and then click OK.