Cisco Access Points configured for FlexConnect have two switch methods available: FlexConnect Switching: LocalFlexConnect Switching: Remote Where Local switching is in use, the AP is managed by a central WLC but clients will receive an IP address local to where the AP is deployed and break out on to the network at that location. Where … Continue reading Cisco FlexConnect Switching Modes
STP: DISABLED > BLOCKING > LISTENING > LEARNING > FORWARDING RSTP (802.1W) DISCARDING > LEARNING > FORWARDING STP disabled, blocking and listening states are combined into a single RSTP state of DISCARDING.
PROBLEMS WITH ANALOG CONNECTIONSDistance limitations - analog signals eventually fade. Repeaters can be introduced to regenerate signal but also regenerate anything else picked up including white noise.Wiring requirements - for each call, a tip and ring wire is required. Not scalable. Digital signals convert analog wave into zeroes and ones.DIGITIZING VOICEStep 1 - Sample the signalNyquist … Continue reading Problems with Analog Connections
Analog Transmission: Using some property of the transmission media to convey a signal. Examples: Phonograph Record players Braille Typical home telephone lines Analog phone lines use the properties of electricity for voice transmission. As you speak into an analog phone, your voice is converted into electricity. The properties of the electricity are used to convey … Continue reading Historic Voice
UNITY Cisco Unity Express Voicemail option integrated with Call Manager Express (aka Cisco Unified Communications Manager Express!), AIM (renamed to ISM - Internal Service Module) and NM (renamed to SM - Service Module) form factors. Up to 250 users Basic Interactive Voice Response (IVR) Auto-Attendant - "Press x for this, y for that", Email (Exchange) … Continue reading Cisco Unity Connection and Unified Presence
Cisco Voice Infrastructure Model Endpoints: IP Phone, Wireless/Cell Phone, Video Phone, IM Client Applications: Voice Mail, Conference Call Apps, Call Centre Apps, 911 Services Call Processing: Unified Communications Manager (Call Manager), Unified Communications Manager Express (Call Manager Express) UC500. Infrastructure: ASA Firewall, Voice Router/Gateway, Voice Switch Core Products of CCNA Voice Cisco Unified Communications Manager … Continue reading Unified Solutions Overview
Trackable Cost Savings:Moves, Adds and Changes (MACs)Reduced WiringReduced Telecommuter and Branch Office expensesIT Staff consolidationApplication consolidationToll bypassSoft Cost Savings:Single inbox for messages (Voicemail/Fax/Email)Extension Mobility (Saves office space - roaming profiles for phones)Internet Website Integration (Happy Customers)Open Architecture (multi-vendor Solution)How to MigrateSome companies may simply buy a new VOIP system outright. Some have existing PBX systems … Continue reading Why use VOIP?