Motorola 326X V.34, and V.32bis, V.34-SDC manual Modem won’t connect

326X Series Modem Troubleshooting Guide (Continued)

Problem Diagnosis/Test Possible Solution

If operating the 326X Series Modem on a leased line, and you experience this type of problem...

Modem won’t connect

NOTE: CQMS parame- ters are only valid once the modems are connected (in data mode)

Check leased line cable for conformance to 2- or 4-wire pinouts (U.S./Canada only).

Ensure one modem is set for answer and one for originate.

Ensure modem is set to match line type (2- or 4-wire).

If you are still experiencing problems, run an LAL pattern test on both modems.

•For a 3261 2-wire leased line cable, pinouts should be Pin 1 (ring) and Pin 2 (tip)

•For a 3261 4-wire leased line cable, pinouts should be:

—Pins 1 (TX Ring) and 2 (TX Tip)

—Pins 7 (RX Tip) and 8 (RX Ring)

For pinouts for your country and model, refer to Appendix C.

•Confirm the Tx and Rx connections for your leased line jack.

•If errors are found on either end, contact Motorola Customer Support.

•If the LAL pattern test passes, you may have line problems; contact your telephone company.

Check the modulation	Ensure the local and remote modem’s modulation modes
configuration:	are compatible with the maximum and minimum rate
• Mode (AT *CA)	options.

•Max Rate (AT *MX)

•Min Rate (AT *MN)

Troubleshooting

Check the leased line transmit	If this setting is adjustable in your country, adjust trans-
level option in both the local and	mit level to approximately -15 dB.
remote modems (LL TX Level,
TELCO OPTS).

Troubleshooting Guide 6-9