> I have seen telcos set their clock source to external, when they are
> supposed to be providing the clock for the PM3. Only if your E1/T1 line
> stays on zero errors, should you start looking at modem code.
PM3-1> ver
Livingston PortMaster PM-3 ComOS 3.8
System uptime is 47 days 20 hours 34 minutes
PM3-1>
PM3-1> sho line0
---------------------- line0 - T1 Inband DS0 ---------------
Status: UP Framing: ESF Encoding: B8ZS PCM: u-law
Signaling: Trunk E&M wink start
Receive Level: +2dB to -7.5dB
Alarms Violations
----------------------------- -----------------------------
Blue 0 Bipolar 0
Yellow 0 CRC Errors 0
Receive Carrier Loss 0 Multiframe Sync 0
Loss of Sync 0
PM3-1>
PM3-1> sho line1
---------------------- line1 - T1 Inband DS0 ---------------
Status: UP Framing: ESF Encoding: B8ZS PCM: u-law
Signaling: Trunk E&M wink start
Receive Level: +2dB to -7.5dB
Alarms Violations
----------------------------- -----------------------------
Blue 0 Bipolar 0
Yellow 0 CRC Errors 0
Receive Carrier Loss 0 Multiframe Sync 0
Loss of Sync 0
PM3-1>
We're having lots of problems with the PM3's. Running 3.8 gives us
problems. Running 3.8.2 gives us a *huge* increase in problems. We can't
run 3.8.2 at all without the phones ringing off the hook with complaints.
And before someone starts with the "foreign ISP" or "rural telco"
junk... I am in a large suburb of Detroit. My equipment is located in
the basement of a telco in a city of several hundred thousand people. Our
potential customer base includes approx 3 million residential and business
customers, minimum. The switch is a Siemens EWSD, about 1 year old at
most - probably less. We run channelized T1. The telco specializes in
selling services to ISP's, which are 80% of it's T1/PRI customers.
-- Nick
------------------------------------------------------------------------------
Nick Seraphin nick@eaglequest.com
President http://www.eaglequest.com/
EagleQuest, Inc. (248) 650-4700
Internet Access Services Rochester, Michigan
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