It can take from 1 to 4 E1 lines from the telco and switch the E1's from active to standby equipment on the internal network.
It monitors the state of the E1 link between itself and active equipment, if for some reason the E1 link goes down (bad interface or router powers down) it switches the E1 link over to the standby equipment.
CME redundancy scenario
If HSRP ip address is configured under telephoney services on the cme systems, and the E1 interface on the primary cme went down or the router went down, The failover switch would switch the E1 to the secondary cme system... (E1 interface on secondary cme router configured with no shut)
If E1 interfaces can be tracked through HSRP then would this not work ?
You have however introduced a single point of failure ie the E1 failover switch, if that failed you would still have to manually take the E1 and connect it to the primary or secondary cme router.
Cisco products have a low rate of failure, much better anyway than the circuits that are connected. Beside, they are expensive and wants to buy something that sits there doing nothing, hence is wasted.
Just get a support contract with a fast shipment for replacements. Or a smaller older router that can do CME for a lessere number of extensions maybe.
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
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