# Default CESID

## Purpose

The Default CESID form allows you to assign default CESID parameters that will be used for all CESID calls.

Use this form to perform the following tasks:

- Customer Emergency Services ID Assignment

- Emergency Services - CESID Programming

- Day and Time Zones

- Program Emergency Services for a Line Interface Module

For information about the operation of the Line Interface Module:

- Line Interface Module Emergency Services Operation

## Conditions

WARNING: MiVoice Business 6.0 supports CESIDs up to 12 digits in length. This may have safety (and legal) implications in networks of older releases which only support 10-digit CESIDs. If you plan to use the longer CESIDs, you are strongly advised to upgrade the entire network to support the longer CESIDs first. Failure to do so could lead to emergency calls having incorrect CESID information in certain cases. For example, consider a hot desk user who is provisioned on a MiVoice Business system that uses 12-digit CESIDs who then logs in using a DN on a 10-digit MiVoice Business system. Because a hot desk DN uses the CESID assigned to the registration (login) DN for emergency call purposes, such calls will contain an incorrect CESID: instead of 12 digits, it will have only 10 (the last two are truncated) and the emergency route preference used will be "Through System Only," although the registration DN preference may be something else. The same scenario applies to resilient devices. Both the primary and secondary MiVoice Business system should be upgraded to avoid mismatched CESID lengths under failover/failback conditions.

## Field Descriptions

Parameter | Description | Default Value
Default CESID | Enter the digits to be used as the CESID for an emergency call where no digits are programmed against the calling directory number, the device, or the zone. If there is no entry in any spot, no CESID is sent. (A default CPN is sent instead.) Up to 12 digits can be programmed. See the above Warning for important information regarding CESID length in a mixed release network. | Blank
L2 Connectivity Detection Protocol | Select the protocol—LLDP Link Layer Discovery Protocol. An An IEEE standard (801.1AB) that provides a vendor-neutral method for Ethernet network devices such as switches, routers and wireless LAN access points to advertise information about themselves to other nodes on the network and store the information they discover. Advertised nformation includes: device type description, boot and main revision, phone IP address, phone MAC address , duplex setting, power consumption, phone DN, attached devices, etc. The information is stored in a SNMP MIB that provides network management systems with accurate network mapping, inventory data and network troubleshooting information. For more information, see the MiVoice Business Engineering Guidelines. (Link Layer Discovery Protocol), CDP Cisco Discovery Protocol. A proprietary mechanism used by Cisco bridges and switches that enables connected devices to learn about each other. For more information, see the MiVoice Business Engineering Guidelines. (Cisco Discovery Protocol) or STP Spanning Tree Protocol. An algorithm specified in the IEEE 802.3 standard to manage multiple links within a LAN. The Spanning Tree Algorithm allows the use of redundant links within the same network without creating active loops. For more information, see the MiVoice Business Engineering Guidelines. (Spanning Tree Protocol)—that the system will use to identify device moves and update CESID assignments. For more information on these protocols, see the MiVoice Business Engineering Guidelines. CAUTION: LLDP for device move detection is supported only by 53xx series and 5540 sets. The protocol setting does not take effect until you reboot the sets. After changing the protocol setting, reboot the sets by issuing the following maintenance command: LOAD IPDevice. No server restart is required to commit changes. If you change this setting, the L2 to CESID mappings may become inaccurate. If you must change the protocol, check for inaccurate entries afterwards and then delete them from the L2 to CESID Mapping form. LLDP-MED is supported only on 53xx and 69xx phone series. Do not select LLDP-MED on the 52xx or legacy phones. | LLDP
Enable Automatic CESID Updating | Enable this option if you want the system to update CESID assignments automatically when a device is moved. When disabled, the system will clear any existing CESID Alarms. When enabled, the system will scan for IP devices with missing CESID and the ' CESID Updating' field set to Automatic. No server restart is required to commit changes. See Automatic CESID Updating Conditions. | No (disabled)