since slip secs are almost always clocking-related, and since you already have tested the only configurable options on your end, line and internal, I would check with the service provider and have them run a test to their DSU/CSU.
I had a similiar issue with a T1 on a 2821. I added the "network-clock-select 1 t1 0/0/0" referencing my T1 controller and my slips went away. This is a global config command and it tells the backplane to derive clock from the controller you specify. You can do a 'show network-clocks' command to see what the current clock source is. By default it is the backplane.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...