Cisco 300-815 CLACCM flashcards

33 cards. Read the term and the definition here. The deck at the top of this page is optional.

Dial-peer matching order

The router matches the most specific (longest) destination pattern first, then uses the lowest preference value, then the lowest dial-peer tag to break ties among equal matches.

Destination pattern wildcards

In Cisco IOS, '.' matches any single digit, 'T' matches one or more digits with interdigit timeout, and '[]' defines a digit range; '^' and '$' anchor the pattern.

Translation rule operation

A translation rule has a match pattern and a replace pattern; the match selects the rule and the replace rewrites the number, using backslash wildcards such as \1.

Route list behavior

A route list contains ordered route groups; the first group with an available member is used, and if all members are busy the list tries the next group.

Calling search space

A CSS is an ordered list of partitions that a device can reach; it determines which directory numbers and route patterns the device is allowed to dial.

Voice translation profile

A translation profile is a set of ordered translation rules applied to a dial-peer, and it can be applied inbound or outbound to modify the calling or called number.

Locations and regions

Regions define the codec between sites, and locations define the bandwidth available; a call that exceeds the location bandwidth is rejected or rerouted.

Extension Mobility login

A user logs in to a phone, which downloads the associated device profile; the phone must have the EM service subscribed and the user associated with the profile.

Device Mobility

Device mobility uses the phone IP subnet to select the correct device mobility group, which then provides the correct location, region, and CSS for the phone.

Mobile Connect

Mobile Connect (single number reach) rings the desk phone and a remote destination; the call can be answered on either leg, with an optional remote destination delay.

Hunt group algorithms

Hunt groups use broadcast, longest idle, circular, or top-down algorithms to distribute calls; the hunt pilot has a CSS and a line group of agents.

Call Park

Call park places a call on a park slot number in a cluster-wide range; any user with access to the range can retrieve the call by dialing the slot.

Intercom line

An intercom line is a one-way, auto-answered call between two users; the called party hears a beep and the call is answered automatically.

Presence group

A presence group controls which users can see each other's presence and BLF status; it is assigned to the device and the user.

Call forwarding CSS

Call forwarding (CFU, CFB, CFNA) uses a CSS that must include the partition of the forwarding destination; otherwise the forward fails.

debug voice ccapi inout

This IOS debug traces call setup, dial-peer matching, translation, and disconnect cause codes; it is the primary tool for gateway call-control troubleshooting.

ISDN cause code 16

Cause code 16 means normal call clearing, which indicates the call was intentionally disconnected by one party rather than a network failure.

SIP 404 response

A SIP 404 Not Found response means no matching route pattern or dial-peer was found for the called number, so the call cannot be routed.

RTMT traces

RTMT collects CUCM traces; the Call Control trace shows digit analysis and route selection, and the SDL trace shows the call flow between cluster nodes.

Urgent Priority

When Urgent Priority is unchecked on a route pattern, CUCM waits for interdigit timeout before routing if a longer match could still be dialed.

MTP and transcoder

An MTP provides media termination for supplementary services, and a transcoder converts between codecs; both consume DSP resources on the gateway or CUCM.

EM login failure

EM login fails when the user is not associated with the device profile, the EM service is not subscribed, or the phone cannot reach the CUCM TFTP.

Jabber service discovery

Cisco Jabber uses the UDS or SOAP service to discover CUCM; the service profile defines the voicemail, directory, and IM&P server settings.

MRA Expressway pair

Mobile and Remote Access uses Expressway-C inside the network and Expressway-E in the DMZ; a traversal zone connects them and a SIP zone connects Expressway-C to CUCM.

Expressway-E certificate

The Expressway-E public certificate must be trusted by remote clients and include the SIP domain and the Expressway-E FQDN in the subject alternative name.

VPN remote phone

A remote phone can use a VPN client or AnyConnect to reach CUCM through the ASA; the phone registers over the tunnel as if it were on site.

MRA TFTP proxy

For MRA, the phone uses the Expressway-E as a proxy to reach the TFTP server for firmware and configuration downloads.

Partitions and CSS

A partition groups directory numbers and route patterns, and a CSS is the ordered list of partitions a device can reach, enforcing calling privileges.

Time-of-day routing

A time schedule and time period are assigned to a route pattern so that calls are allowed only during configured hours; outside the period the call is blocked.

Secure SIP trunk

A secure SIP trunk uses TLS for signaling and SRTP for media; it requires a SIP trunk security profile and a trusted certificate between endpoints.

SIP trunk security profile

This profile defines the TLS listening port, digest authentication, and the incoming and outgoing transport for a SIP trunk.

Cluster security mode

The cluster security mode (mixed or secure) determines whether the cluster supports both secure and non-secure devices or only secure devices.

802.1X phone authentication

A phone can authenticate to the switch with EAP-TLS or EAP-FAST; the switch port must be configured for multi-domain authentication to allow the phone and PC.