ADTRAN Express XLT user manual If YOU are Unable to Connect Calls, Troubleshooting Calls

Chapter 4: Troubleshooting

IF YOU ARE UNABLE TO CONNECT CALLS

See Table 4-A for corrective actions if you cannot connect calls.

	Table 4-A
	Troubleshooting Calls
Condition	Corrective Action
The Loop LED remains on, but	Most likely a problem exists in the software setup (translation) at the
calls cannot be placed.	CO switch, or the network setup in the Express XL.
Local voice calls can be trans-	The line is probably not set up to support data calls.
mitted, but data calls to the
same exchange cannot.
Local data calls go through,	Ensure the far end is working. If not already doing so, place the call
but long distance data calls	explicitly specifying the prefix of the long distance service (for exam-
do not.	ple, 10288 for AT&T). If this does not work, then most likely the
	problem is that the long distance service provider is not providing
	long distance access.
Single B-channel calls can be	There is most likely a problem in the software setup (translation) at the
made, but two B-channel calls	CO switch, or the network setup in the Express XL.
cannot.	If the line has two phone numbers, make sure the second SPID and
	LDN are entered correctly in SPID2 and LDN2 in the Express XL.
	Check with the local service provider to ensure that the line supports
	two data calls. The Express XL status log buffer shows what sequence
	of events occurred. What you need to know is which piece of equip-
	ment first caused the Multilink PPP process to terminate. The status
	logs from both ends may be necessary to determine this.

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