Annexes

Annex 1 - Common Communications Equipment and Terminology

Common name or acronym	Full name	Description and Use
Codan	Manufacturer's name	High frequency radio system using voice communication, commonly used in vehicles
DAMA	Demand Assigned Multiple Access	Satellite (VSAT) system which allows multiple lines of telephone, fax and data to be transmitted via satellite
DTS	Digital Transmission System (proprietary name)	A successor to PACTOR, allowing the transmission of e-mail messages by radio
HF	High Frequency	Range of frequency of radio waves used for long distance radio communication
INMARSAT	International Mobile Satellite Organization (originally called International Maritime Satellite Organization)	Phone system which provides global phone, fax and data transmission via satellite
Factor	Packetised Telex Over Radio	System whereby printed messages can be sent by radio
SATCOM	Satellite Communications	Generic term for any satellite communications system
SATCOM A, B, C, M, Mini-M	Refers specifically to INMARSAT terminals used by UNHCR	Telephone system used for voice, fax and data communications. The equipment comes in various sizes, from suitcase size to small laptop and with varying capabilities from simple telex to video- conferencing
SITA	Soci International de Tcommunications Anautiques	An organization which provides a global communications network for airline reservations and ticketing. It can also provide a communications network for non-airline customers (e.g. UNHCR)
UHF	Ultra High Frequency (Higher than VHF)	Range of frequency of radio waves used for short distance radio communication
VSAT	Very Small Aperture Terminal	Satellite system which allows multiple lines of telephone, fax and data to be transmitted via geo stationary satellite
VHF	Very High Frequency	Radio waves used for short distance radio communications (e.g. handsets or walkie-talkies)
VHF Repeater	Very High Frequency Repeater	Equipment used to extend the range of VHF short distance radio communications to a range of 20 to 80 km, depending on the topography

Annex 2 - Message Identification

The following instructions are for telecommunications operators who need to keep a formal log of all messages received and transmitted (including e-mail, fax and PACTOR). The principles are that in each case "HCR" must appear in the prefix and whatever the type and means of communication, each message must bear one number unique to that transmission for each addressee.

Components of the message identity are:

· Message from Headquarters to the Field: HCR/aaaaa/9999

· Message from the Field to Headquarters: aaaaa/HCR/9999

where aaaaa is the official UNHCR location (Duty Station) code of the Field Office concerned, and 9999 is a four figure sequential number starting at 0001 on the 1" of january each year.

· Between field offices: aaaaa/bbbbb/HCR/9999

where aaaaa is the five letter location code for the sending field office and bbbbb is the five letter location code for the addressee, and 9999 = four figure sequential number, starting at 0001 on the 1" of January each year.

· To non-UNHCR addressees: aaaaa/MSC/HCR/9999

There are two categories of four figure sequential numbers which may be used:

Category A is used for communications between Headquarters and field offices and between field offices with a considerable message exchange. The number used would be the next in the series for communications that year between the originator and addressee.

Category B is for UNHCR addressees who do not fall into Category A and for non-UNHCR addressees. If there are many such messages, two series may be used: UNHCR and non-UNHCR. All series or sequences restart at 0001 on the 1" of January.

Examples

Category A messages:

HCR/ANGLU/0123 means the 123^rd message from Headquarters to Luanda, Angola this year. ANGLU/HCR/0210 means the 210^th message from Luanda, Angola to Headquarters this year. ANGLU/RSAPR/HCR/0097 means the 97^th message from Luanda to Pretoria, South Africa this year (where Luanda and Pretoria use sequential numbering).

Category B messages:

ANGLU/SENDA/HCR/0024 means a message from Luanda to Dakar, Senegal, and which is the 24^th Category B message this year from ANGLU (where Luanda and Dakar do not use sequential numbering).

If there is more than one addressee, a separate message identity must be used for each. If the message is being sent to some addressees for information only, this should be indicated in brackets after the respective message identity. For example messages from Luanda to Headquarters for action, copied to Dakar for information, would bear the following:

ANGLU/HCR/0124
ANGLU/SENDA/HCR/0024
(SENDA for info)

In order that the system can work effectively any missing sequential number in Category A must be reported to the other category A addressee as soon as possible, and the last number of the year (or of a series) must be reported to each category A addressee. If a category A number is duplicated by mistake, correct this by allocating the next available number and reporting this number to the addressee by a service (SVC) message. Note that the SVC message itself should also be numbered. Indicate the date or subject to avoid any danger of confusion.