MGX8850 using SRME for bulk distribution and VISM-PR cards
My customer has a BPX/MGX backbone. They are a GSM mobile operator using VISM-PR cards in AAL2 trunking mode. At most of the MGX sites we use the E1 backcards on the VISM cards for connectivity into the Ericsson MSC. We have just deployed a new site where the MSC has STM-1 connectivity instead of E1 connectivity (hence the use of SRME cards)
We are experiencing crackling or static on the voice bearer channels. The speech quality is good, but the crackling appears in the background and in one direction only. We have set up a test to simulate the voice connectivity where we use an E1 tester tos end a test tone on a speciffic timeslot. What we have found is that if we increase the frequency from about 1000HZ to 1400HZ the crackling appears. If we decrease the frequency it goes away. In addition if we attenuate the signal to about -19db the crackling goes away. Any ideas
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...