Standards covering aspects of Caller ID data transmission and signaling have been published by various international standards committees, regulatory agencies, and network carriers. In most cases, the standards fall into one of two different categories, depending on how the Caller ID data is transmitted. They are by means of FSK (Frequency Shift Key) modulation or DTMF (Dual Tone Multi-Frequency) coding. A key factor in determining what transmission method is used within a given region is the capabilities of the central office switches. Various central office switches may lack the capability of generating an FSK carrier or DTMF tones.
FSK Based Caller ID Standards
Telecordia (formally Bellcore)
|
Region: |
USA |
|
Standards: |
GR-30-CORE, Issue 2, December
1998 TR-NWT-000031, Issue 4, December
1992 TR-NWT-001188, Issue 1, December
1991 TR-NWT-000575, Issue 1, October
1992 TR-NWT-001401, Issue 1, September
1993 SR-TSV-002476, Issue 1, December
1992 SR-3004, Issue 2, January 1995 |
|
Overview: |
The above listed documents provide
a relatively complete description of Type I and Type II Caller ID
functionality, including testing procedures to insure compliance
with the Customer Premises Equipment (CPE). Type I Caller ID functionality
is comprised of documents TR-NWT-000031, TR-NWT-001188, and TR-NWT-001401.
The first document covers calling number delivery, with the second
covering calling name delivery, and finally the third describing
the visual message waiting indictor generic requirements. For Type
II Caller ID, the documents TR-NWT-000575, TR-NWT-000031, and TR-NWT-001188
contain the primary requirements. GR-30-CORE consists of the generic
requirements for transmitting voiceband data to the CPE. These are
generic requirements from the Stored Program Control System. |
|
Contact: |
Telecordia Technologies Customer Service Tel: (800) 521-2673 (US and Canada) |
Telecommunications Industry Association (TIA)
|
Region: |
USA |
|
Standards: |
TIA/EIA-716 Telecommunications
Telephone Terminal Equipment - Type 1 TIA/EIA-777 Telecommunications
Telephone Terminal Equipment - Type 2 |
|
Overview: |
These TIA standards describe the requirements
for Caller ID capable Customer Premises Equipment (CPE) in both
the on-hook (type I) and off-hook (type 2) modes of operation. Similar
to the Telecordia SR-3004 document, the TIA documents cover both
the physical and data layer aspects of Caller ID transmissions.
Additionally, the TIA/EIA-777 standard provides the requirements
for Multiple Extension Interworking (MEI) functionality. MEI allows
for multiple type 2 telephones to correctly receive Caller ID information
when either in the on-hook or off-hook state. As such, the call
logs for all MEI compliant telephones will be consistent with each
other. Non-MEI compliant telephones can contain different call logs
and prevent type 2 Caller ID data reception when off-hook. In addition,
MEI provides Call Waiting with Disposition (CWD) functionality with
multiple telephones in the off-hook state. For CAS (CPE Alerting
Signal) detector testing, the TIA/EIA-777 document references the
testing plans contained in the Telecordia SR-3004 and SR-TSV-002476
standards. |
|
Contact: |
Telecommunications Industry Association |
|
Region: |
Canada |
|
Standards: |
ID-0001, November 1989 ID-0008, April 1991 ID-0012, May 1992 |
|
Overview: |
Closely paralleling the Telecordia (Bellcore) and TIA standards, the above listed documents describe the operation of Type I (on-hook) Caller ID used within Canada. ID-0001 and ID-0012 describe both the physical layer characteristics for the FSK modulating signal and related timings, along with the data layer specifications. The data layer message format and parameter
values define how the calling number, name, and time are encoded
into a series of bytes for FSK transmission. ID-0008 focuses solely
on Visual Message Waiting Indication (VWMI) services. Though similar
in physical layer characteristics and data layer message format
to ID-0001 and ID-0012, VWMI uses a different parameter type. |
|
Contact: |
Stentor Resource Center Tel: (800) 265-6608 (Canada) |
|
Region: |
Australia |
|
Standards: |
DC.001, Issue 4, 24 July 1997 DC.002, Issue 3, 4 June 1999 DC.017, Issue 1, 30 June 1997 DC.018, Issue 1, 30 July 1997 DC.020, Issue 2, 8 June 8 1998 Austel TS 030 - 1997 |
|
Contact: |
Telstra Corporation Limited Fax: (03) 9634-6903 Interworking &
Standards Standards Australia (Head Office) Tel: (02) 9746 4600 |
European Telecommunications Standards Institute (ETSI)
|
Region: |
Europe |
|
Standards: |
Public Switched Telephone Network
(PSTN); Public Switched Telephone Network (PSTN); |
|
Overview: |
The European Telecommunications Standards
Institute (ETSI) standard concerning Caller ID capable terminal
equipment (TE) consists of primarily the four documents listed above.
The ETSI standard is basically an amalgamation of various other
standards, such as the Bellcore, BT, and CCA. Also covered in the
ETSI documents is a Caller ID transmission protocol based on DTMF
signaling. The documents ETS 300 659-1 and ETS 300 659-2 describe
the subscriber line protocol used for Caller ID services for both
on-hook and off-hook data transmission. ETS 300 659-1 explains the
on-hook data transmission protocol in terms of signaling, timing,
tolerances, along with descriptions of the data link message and
parameter coding. For the case of off-hook data transmission, ETS
300 659-2 explains the protocol, along with any differences or extensions
to relating to ETS 300 659-1. The third and forth documents in the
set, ETS 300 778-1/2, focuses on the requirements of the terminal
equipment. This includes the physical layer and data link layer
requirements, along with testing setups and conditions. |
|
Contact: |
ETSI Secretariat: Office address: Tel: +33 92 94 42 00 |
|
Region: |
UK |
|
Standards: |
SIN 242, Issue 2, November
1996 SIN 227, Issue 2, April 1996 |
|
Overview: |
The British Telecom standard consists primarily of two documents. The first document SIN 227 describes the technical aspects of the Caller Display Service (CDS). Included in this is the physical layer characteristics along with the alert signals and V.23 data signals specifications. Also described in SIN 227 is the Calling Line Identification Presentation (CLIP) message structure. This entails the message format, message timing, requirements for CLIP parameters, message length, and examples of the message structure. The second document SIN 242 outlines
the requirements of the terminal equipment (TE). This includes the
signaling requirements for both the physical and data link layer,
operation of the terminal equipment in terms of its network interface,
and a series of electrical and signaling tests. |
|
Contact: |
Regulatory Services Unit Tel: 0800-318601 |
The Cable Communications Association (CCA)
|
Region: |
UK |
|
Standards: |
TW/P&E/312, Issue 4, April
1997 |
|
Overview: |
The Cable Communications Association (CCA) document TW/P&E/312 describes an interface for providing Caller Display Services (CDS) that is an alternative to the British Telecom SIN 227 and SIN 242. The document includes the general requirements
for the terminal equipment (TE), along with the physical layer and
data link layer signaling descriptions. Also, testing procedures
and test requirements are provided to insure compliance of the terminal
equipment. |
|
Contact: |
Telewest Communications Group Ltd Tel: 44 1483 750900 |
Nippon Telegraph and Telephone (NTT)
|
Region: |
Japan |
|
Standards: |
Analog Calling Line Identification
Presentation (CLIP) |
|
Contact: |
Service Development Promotion Group Tel:
(03) 5354-1257 |
Niveau des signaux CALLER ID 
Les standards CALLER ID de la TIA (Telecommunication
Industry Association)
Standard CALLER ID et Marché à Taïwan