Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL Electronics, Inc.
IMUX Application Note AN2000-020 Reference Ass’y 106960-5
IMUX 2000
OCUDP for Frame Relay Applications
This Application Note is specific to customers that use the RFL IMUX 2000 OCUDP to carry
56 kb/s Frame Relay circuits such as the DYMEC Dynaster 2000
The data content in certain frame relay circuits can mimic the in-band control codes in a 56 kb/s
OCUDP link and cause the OCUDP to erroneously go into loopback. This severs the link and
requires the OCUDP to be power cycled to recover.
To prevent this, a special version of the OCUDP Module has been developed that does not react
to in-band control codes. The part number is 106960-5.
• When the 106960-5 is set to 56 kb/s it will not accept in-band control codes originating from
the customer’s frame relay equipment or the T1 data stream.
• Operation at 64 kbps is unaffected.
• Configuration settings in the OCUDP are un-changed from the standard module.
First Release March 1, 2010
RFL OCUDP RFL Electronics Inc.
July 15, 2010 26 (973) 334-3100
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