# About Call Detail Recorder

Note: This option must be enabled/configured using the Text Console.

Call Detail Recorder (CDR) is an optional feature that implements a call accounting system that is referred to in the telecommunications industry as call detail recording. This section describes the features and capabilities of the Call Detail Recorder optional feature. It works with the NuPoint Voice application on the NuPoint UM server and must be enabled/configured using the Text console. You can generate reports about call detail information using either the Web console or the Text console.

CDR creates a record of each call transaction (such as a voice message) on the NuPoint Unified Messaging server. Records are stored in a single-line, fixed-length format. They are uniquely identified by consecutive Call Sequence Numbers, which range from 1 to 999999. After record 999999 is written, the next record is number 1. Records are not overwritten when the Sequence number goes back to 1. Overwriting only occurs when the defined maximum number of records have been stored.

The CDR application is designed to be run by one user at a time to avoid two people overwriting each other’s selections. If the CDR Main Menu is running on one terminal, and a second user tries to start the CDR Main Menu, it terminates after giving the second user an error message.

CDR runs continuously once you start it. Even if you shut down or reboot the server, CDR restarts when the NuPoint Voice application loads. Similarly, if you stop CDR, it remains off until you restart it from the CDR menu.

Most configuration options can be changed while CDR is running EXCEPT the following:

- Deleting CDR records

- Reducing the maximum number of CDR records. However, you can increase the maximum number while CDR is running.

## CDR Features

Call Detail Recorder is designed for easy data transport to another computer system. The remote site can then process the call information using any appropriate application. Call Detail Recorder provides the following features:

- Multiple call types, including network

- Call details using abbreviated codes

- Flexible output file format (40 160 columns per line)

- File wraparound capability

- Warning messages before CDR records are overwritten

- Active status maintained across server resets

- Administrator-defined CDR file limit

- Online report generator

- Output file download capability, including:

  - Limited download search criteria

  - Administrator-defined field delimiter, pad string, and length

  - ASCII/Text transfer support

  - Test download capability

  - Auto-disconnect after download

## CDR Records

CDR creates a record of each call transaction on the NuPoint UM server (for example, a voice message). Records are stored in a single-line, fixed-length format. They are uniquely identified by consecutive Call Sequence Numbers, which range from 1 to 999999. After record 999999 is written, the next record is number 1. (Call Sequence Numbers "turn over," just like the odometer in a car.) Records are not overwritten when the Sequence number goes back to 1. Overwriting occurs when the defined maximum number of records have been stored.

Note: CDR records are sometimes referred to as "messages" in the menus or prompts.

## CDR Fields

The CDR Record Fields table below lists the 26 fields that can appear in a CDR record. For information about field length and/or formatting, see CDR Reports.

CDR records contain certain fields that need further explanation. These fields contain two-digit numerical codes that identify certain details of every call monitored. The tables that follow this one describe the meanings of these fields:

- Field 13: CDR Call Types

- Field 14: CDR Access Types

- Field 15: CDR Termination Types

- Field 23: CDR Error Codes

Finally, you can see the interrelationship of the above fields by referring to Interpreting Your Results.

CDR Record Fields
Field | Abbreviation | Meaning
--- | --- | ---
1 | CSN | Call sequence number
2 | DATE | Call start date
3 | TIME | Call start time
4 | STIM | Call stop time
5 | PORT | Port number (Module, Port, and Line)
6 | SYID | Server System ID (site code)
7 | CDUR | Call duration
8 | FMBX | From mailbox (when using tree or chain mailbox) or originating mailbox
9 | TMBX | To mailbox (destination mailbox or mailbox called; also mailbox logged into by user)
10 | FNUM | Originating telephone number or network node number
11 | TNUM | Destination telephone number or network node number, or mailbox transferred to from a tree or chain mailbox
12 | MSG | Server speech message number
13 | CT | Call type ( see CDR Ca ll Types table )
14 | AT | Access type (see CDR Access Types table)
15 | TT | Termination type (see CDR Termination Types table)
16 | ME | Invalid mailbox entries
17 | PE | Invalid Passcode entries
18 | MS | Number of messages sent
19 | MP | Number of messages played or received
20 | MD | Number of messages discarded
21 | MK | Number of messages kept
22 | TA | Number of failed transfer attempts
23 | EC | Error code (see CDR Error Codes Table)

## Call Types (Field 13)

CDR allows you to determine different types of calls, which lets you bill them at different rates, for example, or ignore certain types you include in your basic service package. The table below shows the available call types you can track.

Call Type (CT) is the 13th field in each CDR record.

You should use Call Type 1 only when you need as much detail as possible, such as when troubleshooting. It lists every message sent to and from each mailbox. For example, if a user sends one message to a distribution list with four users, and you are logging Call Type 1 messages, CDR generates four records, one for each recipient. If you do not log Call Type 1, CDR still creates one record indicating that a user sent four messages (4 appears in the MS field).

CDR Call Types
Call Type | Meaning | Call Type | Meaning
--- | --- | --- | ---
01 | Local message delivery (to local mailboxes, by outside caller or user) Use only when maximum detail needed. | 15 | Incoming Busy-forwarded call
02 | Outgoing NP WakeUp call | 16 | Incoming No-answer-forwarded call
03 | Telephone call placement | 17 | Incoming Indirect
04 | This call type no longer used | 18 | Outgoing NP Net call setup
05 | Paging call or outside message delivery | 19 | Incoming NP Net call setup
06 | This call type no longer used | 20 | This call type no longer used
07 | Outgoing NP Net call | 21 | This call type no longer used
08 | Cut-through paging call | 22 | Outgoing NP Net disconnect
09 | This call type no longer used | 23 | Incoming NP Net disconnect
10 | Incoming NP Net call | 24 | This call type no longer used
11 | Mailbox Purge | 25 | This call type no longer used
12 | Incoming direct call | 26 | This call type no longer used
13 | Incoming direct call - No passcode | 27 | NuPoint Voice resource access
14 | Incoming Call-forwarded call | 28 | NP View network access

Each of these Call Types and their related fields is described in the "Analyzing CDR Data" section.

## Networking Application Call Types

NP Net has its own call types (see the table above) that display Call Setup information. These call types only log the time used by the handshaking process to connect a pair of NP Net servers. In addition to the Call Setup message types, NP Net has its own incoming and outgoing call types that log the time used in transmitting or receiving each individual message between two NP Net servers. Finally, there are two NP Net disconnect call types.

## Access Types (Field 14)

Access Type (AT) is the 14th field in each CDR record and shows how the caller or user accessed the server. You can use Access Types for differential billing or to determine your clients’ usage of the server. The following table shows the possible access types.

CDR Access Types
Access Type | Meaning | Access Type | Meaning
--- | --- | --- | ---
01 | Outside caller | 10 | This access type no longer used
02 | Mailbox user | 11 | NP Net receipt update
03 | Mobile DID user | 12 | Name broadcast
04 | Outside caller to template mailbox | 13 | Greeting broadcast
05 | This access type no longer used | 14 | Passcode broadcast
06 | NP View session over TCP/IP network | 15 | Message Delivery, billed (all-types)
07 | Outside caller called into NP Receptionist | 16-22 | This access type no longer used
08 | Message Delivery, non-billed (all types) | 23-25 | Reserved for future use
09 | User accessed Administration-by-Phone functions | 40 | NP OnDemand feature

## Termination Types (Field 15)

Termination Type (TT) is the 15th field of each CDR record. It indicates how the call was ended. Again, you can use this for differential billing or to determine your clients’ usage of the server. The following table lists the Termination Types available.

Termination Types 1 through 8 are generated at the completion of a call. Types 9 and 10 are for calls that continue after a record is logged. For example, if an outside caller leaves a message and stays on the line to hear the prompt, the caller can then leave a message for another user. CDR creates a second record for the next action the caller performs. This subsequent record indicates the mailbox being used in the From Mailbox field (FMBX, field number 8).

CDR Termination Types
Termination Type | Meaning
--- | ---
00 | Unknown
01 | Call completed successfully
02 | Caller/user hung up
03 | Call failed
04 | Caller/user disconnected by the server, or three invalid mailboxes entered sequentially, or invalid passcode entries, or no response from caller/user
05 | Caller/user transferred to an extension
06 | Caller/user transferred to attendant
07 | Caller/user transferred to E-mail
08 | Message delayed by recipient (used with Call Placement)
09 | Caller/user transferred to mailbox (from tree or chain mailbox)
10 | Caller/user recycled (completed call, performed another function)

## Error Codes (Field 23)

The Error Code (EC) is the 23rd field in the CDR record. It indicates if there was any error or problem with the call. You can use error codes for differential billing (for example, only bill calls with certain codes) or to determine if there is a problem with the server when troubleshooting.

The following table lists the available Error Codes and their meanings.

CDR Error Codes
Error Code | Meaning | Error Code | Meaning
--- | --- | --- | ---
00 | Unknown error. Contact your support representative. | 12 | Message rejected by destination
01 | Call successfully completed | 13 | Mailbox was in use when user called
02 | Call terminated due to excess invalid mailbox number entry attempts | 14 | Could not transfer caller/user to an extension
03 | Call terminated due to excess invalid passcode entry attempts | 15 | Could not transfer caller/user to an attendant
04 | Timeout on waiting for input | 16 | Could not transfer caller/user to E-mail
05 | Too many bad access code entries | 17 | Access to mailbox denied
06 | Destination was busy | 18 | This error code no longer used
07 | Destination did not answer | 19 | This error code no longer used
08 | Network node does not exist | 20 | Time limit reached
09 | Mailbox does not exist | 21 | Message is bad or does not exist
10 | Invalid telephone number | 22 | Destination mailbox is full
11 | Invalid extension number | 23 | This error code no longer used