ADTRAN Express XLT - Manual (Page 127)

Chapter 4: Troubleshooting
61200070L1-1 Express XL/XLT User Manual 111
6. If the Loop Status in the Express XL/XLT Status menu continuously reads
Getting TEI #2
, the Express XL/XLT has completely initialized the first
phone number but is unable to establish logical layer 2 for the second
phone number. The problem is in one or both of the following places:
• The Express XL/XLT software setup
• The telephone service provider’s software setup
To isolate the problem, perform the following procedure:
A. Ensure the line is multipoint with two phone numbers.
B. Ensure that the Express XL/XLT is set up with the correct
SPID and LDN. For example:
SPID1 = 20572270460101
SPID2 = 20572270470101
LDN 1 = 7227046
LDN 2 = 7227047
C. Try swapping SPID1 with SPID2 and LDN1 with LDN2.
Determine if the problem is the second phone number or
the quantity of phone numbers.
D. If possible, try another piece of functioning ISDN equip-
ment with a U-interface on the line.
E. With the Express XL/XLT connected to the line and pow-
ered up, talk to your service provider’s repair group and
tell them you have an ISDN basic rate line that appears
physically okay but is unable to register its SPID(s). Ask
them to check the line translation, ensure the line sup-
ports dynamic TEI allocation, and verify the SPIDs. Tell
them that you have an NT1 and terminal adapter device
connected to the line.
7. If the Loop Status in the Express XL/XLT Status Menu continuously reads
Register SPID #2
, the Express XL/XLT has completely initialized the first
phone number but is unable to establish logical layer 3 for the second
phone number. The problem is in one or both of the following places:
• The Express XL/XLT software setup
• The telephone service provider’s software setup