I have two E1s: one E1 connects to the PSTN and the other E1 connects to a PBX.
I found that I have Slip errors on the E1 that connects to the PBX. I used "network-clock-select wic 3" to use the clock of the E1 that connects to the PBX (which resides in a VWIC in slot 3). When I do that, the errors in the E1 to the PBX stop. However, I begin to have errors on the E1 that connects to the PSTN!
It seems that the PSTN and the PBX E1's require different clocking - but the router supports only one clocking (which it uses on both E1's).
How can I solve this E1 clocking issue?