Cisco 350-801 CLCOR flashcards
Cisco 350-801 CLCOR · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- DHCP Option 150
- Provides IP phones with a list of TFTP server addresses during boot, which the phone uses to download its configuration file and firmware load.
- CUCM cluster user maximum
- A single Cisco Unified Communications Manager cluster is sized for up to 20,000 users; larger deployments use multiple clusters joined with Intercluster Lookup Service.
- Expressway-E placement
- In Mobile and Remote Access, the Expressway-E is deployed in the DMZ and the Expressway-C inside the enterprise, joined by a traversal zone that carries signaling and media.
- CUCM publisher role
- The publisher is the first cluster node and holds the master database; subscribers replicate from it, and configuration changes cannot be made while it is offline.
- Smart Licensing evaluation period
- A new Cisco collaboration deployment can run in Smart Licensing evaluation mode for 90 days before it must register with Cisco Smart Software Manager.
- NTP requirement in CUCM
- All cluster nodes must synchronize to a reliable NTP source; time skew breaks certificate validation, database replication, and call detail record timestamps.
- CUCM OVA sizing
- OVA templates fix vCPU, memory, and disk for a specific user count from 1,000 to 20,000, and must match the supported UC version and ESXi matrix.
- SIP 488 response
- 488 Not Acceptable Here means the media described in the SDP offer cannot be supported, typically a codec mismatch, so the caller must retry with a compatible codec.
- SDP rtpmap attribute
- The a=rtpmap line maps an RTP payload type number to a codec name and clock rate, for example payload 0 to PCMU at 8000 Hz.
- RTP port range
- RTP media uses even UDP ports from 16384 to 32767, and RTCP uses the next higher odd port to send reception reports and statistics.
- G.729 bandwidth
- G.729 compresses voice into an 8 kbps payload and consumes roughly 24 to 31 kbps on the wire including IP, UDP, and RTP headers.
- SCCP signaling port
- Skinny Client Control Protocol phones register and signal to Cisco Unified Communications Manager over TCP port 2000; secure SCCP uses TLS on port 2443.
- RFC 4733 DTMF
- Out-of-band DTMF sent as RTP telephone-event packets; it is preferred on SIP trunks because the digits survive compression by codecs such as G.729.
- Phone configuration filename
- A Cisco IP phone downloads SEP<MAC>.cnf.xml from TFTP, where the MAC address is uppercase and contains no separators, to learn its lines and settings.
- Device pool contents
- A device pool bundles the CUCM group, region, location, date/time group, SRST reference, network locale, calling search space, and media resource group list for a set of devices.
- Auto-registration
- Unprovisioned phones register automatically into a configured directory number range and receive the auto-registration device pool and calling search space.
- Extension Mobility
- A user logs into a shared phone, which downloads that user's device profile and applies its lines and settings until the user logs out.
- CAPF function
- The Certificate Authority Proxy Function issues and manages Locally Significant Certificates on phones, enabling encrypted TLS signaling and SRTP media.
- BAT tool purpose
- Bulk Administration Tool imports and exports phones, users, lines, and templates using CSV files, validating records before insertion and supporting rollback of jobs.
- Partition and CSS
- A partition groups directory numbers and patterns, while a calling search space is an ordered list of partitions that determines which numbers a device may dial.
- Route list purpose
- A route list holds ordered route groups and is the target of a route pattern, providing failover to the next route group when a gateway is unavailable.
- Route group algorithm
- Route groups distribute calls across member gateways using top-down, circular, or longest-idle algorithms, selected when the route group is configured.
- Translation pattern
- A translation pattern matches dialed digits and rewrites the called or calling number, then routes the transformed number using its own calling search space.
- Hunt pilot hierarchy
- A hunt pilot points to a hunt list, which contains line groups; line groups hold directory numbers and apply the configured call distribution algorithm.
- Location-based CAC
- Locations define the audio and video bandwidth permitted between sites, and Cisco Unified Communications Manager rejects a call when that bandwidth is exhausted.
- FAC versus CMC
- Forced Authorization Codes validate a caller's privilege level before a call completes, while Client Matter Codes tag the call for billing or client tracking.
- Media resource group list
- An MRGL is an ordered list of media resource groups that a device uses to locate conference bridges, MTPs, transcoders, and music on hold servers.
- MTP purpose
- A Media Termination Point relays RTP streams and provides DTMF interworking, SIP early offer support, and supplementary services between endpoints using different signaling.
- Transcoder function
- A transcoder converts between codecs such as G.729 and G.711 using DSP resources, and it registers with Cisco Unified Communications Manager over SCCP.
- Meet-me conference
- A meet-me conference is configured on a conference bridge with a dialable number that participants call to join, unlike an ad hoc conference started from a phone.
- Multicast MOH
- Multicast music on hold sends one audio stream to a multicast address and port shared by many listeners, reducing WAN bandwidth compared with per-call unicast streams.
- Region codec rule
- A region defines the maximum codec used between devices assigned to different regions, while a location then limits the bandwidth those calls may consume.