WHAT IS STD ? ( Subscriber Trunk Dialling )

STD enables you to directly dial a phone no. in another City / Station and engage in Telecommunication. Each distant City / Stn. is allotted a STD dialing prefix code. While dialing using STD you will have to dial continuously :

In case of National STD : the STD prefix [ 0 ] + STD stn code + distant party phone No.
For International STD : the prefix [ 00 ] + country code + distant country city stn code + distant party phone no.
The country code for India is 91.
For Home Country Direct : the prefix [ 000 ] + country code (see list given).

HOW STD CALLS ARE CHARGED ?
Billing of STD Calls is determined based on the following criterion :
1. Distance of the Distant City / Stn. from the Calling Stn.
2. Type of the day (holiday or normal).
3. Time when the Call is answered by the distant party.
4. The Service accessed.

Invariably, one call unit is incremented on answering by the distant called party; afterwards one or more call meter unit increments at regular intervals till the connection lasts.

However, there is no call charge if you replace the receiver before dialing all the digits required to be dialed or if the wanted number is busy or there is no-answer.

Dynamic STD Locking Operating Instructions at a Glance *
FUNCTION

I. FETEX Exchange
Codes :
242, 243, 248
334, 337

Password Registration dial 123 1111 xxxx ( xxxx : your chosen 4-digit password )
Allow All Calls dial 124 xxxx 0
Bar STD Calls dial 124 xxxx 1

II. E-10B & OCB Exchanges
Password Registration dial 123 xxxx xxxx ( xxxx : dial twice your chosen password )
Allow All Calls dial 124 xxxx 0
Bar STD Calls dial 124 xxxx 1
Bar STD + Trunk Calls dial 124 xxxx 2
Allow NSD , Local & Trunk Calls dial 124 xxxx 3
Bar All O/G Calls dial 124 xxxx 4
Change Password dial 123 xxxx yyyy (xxxx : old code) (yyyy : new code)

III. EWSD Exchanges
Password Registration
dial 123 0000 xxxx ( xxxx :your chosen 4 digit password )
Allow All Calls dial 124 xxxx 0
Bar STD Calls dial 124 xxxx 1
Bar STD + Trunk Calls dial 124 xxxx 2
Allow NSD , Local & Trunk Calls dial 124 xxxx 3
Bar All O/G Calls dial 124 xxxx 4
Change Password
dial 123 xxxx yyyy (xxxx : old code) (yyyy : new code)

* All phone users, please check with the DE ( Intl ) and ascertain the
type of your Exchange.

Eleven Tips on Using the STD Facility :

1. Please note that Dynamic STD Locking Facility is provided to you automatically free of charge as soon as STD dialing facility is provided.

2. You should use Dynamic STD locking facility religiously. Unlock your STD facility only when you need to make a STD call,else,keep it locked.

3. Select your 4-digit Dynamic Locking Password Code carefully so that it is easy to remember for You but difficult to guess by others.

4. Remember, if anyone attempts to break your Dynamic Locking password code, the STD will be permanently disabled after ten wrong attempts.

5. If, for any reason, your Dynamic STD gets permanently disabled, you will have to contact the DE ( Intl) of your Exchange and after the facility is revived, you will have to start afresh with registration of the Password code etc.

6. While locking STD using Dynamic Locking, it is preferable to use the option : STD + Trunk Calls barred.
While unlocking, unless you want to make an ISD call, unlock by using option : only NSD + Trunk Calls allowed) so that in case you forget to lock again, none can misuse your ISD dialing facility at least.

7. While dialing on STD, please dial each digit carefully with some minimum pause between digits so as to ensure that the digits are correctly registered in your Exchange. Remember, any wrong dialing may lead to connection being established to a wrong no. which will cost you money as soon as the called party (even though wrong No.) answers.

8. After finishing any STD call, replace your handset and next lift again to check that you have got back dial tone on your phone. This is to ensure that your earlier STD call has indeed been terminated.

9. For checking whether STD is accessible from your phone, from Calcutta you may dial 011,161 and wait for hearing a continuous 800 Hz. tone from Delhi.

10. Electronic Subscribers, if you do not require ISD facility on your phone, kindly apply for only ISD barring to the DE (Intl) of your Exchange.

11. If you use a phone set with number display feature, then after any operation of dynamic STD locking/unlocking, lift the handset again and dial any single digit and replace the handset. If you fail to do so,
later on anyone by hitting the 'Last No. Redial' button can see the password involved in the last dynamic lock / inlock operation and your secret will be out !

Meter Rate Slab Time Zones for National STD Calls

Sundays & National Holidays

NOTE : Three National Holidays are : 26th JAN , 15th AUG & 2nd OCT.

14,000 Visitors on this website in 72 Days.

For the purpose of charging National STD Calls, the country is divided into a no. of Long Distance Charging Areas (LDCA). Each LDCA comprises several Short Distance Charging Areas (SDCA). For each LDCA, there is one Stn designated as Long Distance Charging Centre (LDCC). For each SDCA, there is one Stn designated as Short Distance Charging Centre (SDCC).
Calls between any two stations in two different LDCAs are charged depending on the radial distance between the corresponding LDCCs.
Calls between two stations in different SDCAs are charged depending on
the radial distance between the corresponding SDCCs.

Tariff & Dialling Scheme for Calls between adjacent Short Distance
Charging Areas around Calcutta Telephones. ( w.e.f. 15/8/1998 )

Call charge : 1 unit every three minute or part thereof.

Dialling Scheme

Canning Area Exchanges :
( From Calcutta Telephones dial : 9118 + Tel No.)

Basanti, Bhangar, Canning, Champahati, Dhamua, Ghutiari-Sharif, Gocharan, Joynagar, Kashinagar, Mathurapur, Raidighi, Taldi.

Champadanga Area Exchanges :
( From Calcutta Telephones dial : 9112 + Tel No. )

Bagumpur, Bhagabatipur, Champadanga, Chanditala, Dihi-badpur, Dwarhatta, Eksara, Gopinagar, Haripal, Harinkhola, Jangipara, Jinpur, Masat, Nalipur, Rajbalhat, Shaympur, Tarakeshwar.

Dhaniakhali Area Exchanges :
( From Calcutta Telephones dial : 9113 + Tel No. )

Belmuri, Bhandarhati, Boinchi, Dasghara, Dhaniakhali, Gajinadaspur, Guptipara, Gurup, Jirat, Khejurdaha, Khannan, Kuliapara, Mahanad, Pandua, Puinan, Rameshwarpur.

Diamond Harbour Area Exchanges :
( From Calcutta Telephones dial : 9174 + Tel No. )

Diamond Harbour, Falta-EPZ, Fatepur, Kulpi, Lakshmikantapur, Mograhat, Nurpur, Raichak, Sarisha, Usthi.

Habra Area Exchanges :
( From Calcutta Telephones dial : 9116 + Tel No. )

Amdanga, Ashokenagar, Badarhat, Beliaghata-Bridge, Beracharpa, Bira, Charghat, Gobardanga, Gooma-Habra, Ishwarigacha, Kharibari, Kumarakashipur, Rajarhat.

Jagatballavpur Area Exchanges :
( From Calcutta Telephones dial : 9114 + Tel No. )

Ajodhya, Amta, Bagnan, Bakshirhat, Chitrasenpur, Gangadharpur, Jagatballavpur, Kalyanpur, Kanpur-Pinas, Panchla, Shyampur, Udainarayanpur.

Ranaghat Area Exchanges :
( From Calcutta Telephones dial : 9173 + Tel No. )

Arangahata,Badkulla, Bagula, Bara Jagulia, Birnagar, Chakdah, Dattaphulia, Irulia, Phulia, Haringhata, Madanpur, Nagar-Ukhra, Purba Bishnupur, Ranaghat, Rasulpur.

For getting any Calcutta Phone No. from any of the exchanges in the above listed areas : dial 913 + Tel No.

Phone rental and registration charges shall be as per existing slabs based on the total exchange capacity of the SDCA.

International Subscriber Dialed calls ( for ALL days )
(N)ormal Rates ( 06:00 to 23:00 hr. )
(C)oncessional Rate ( 23:00 to 06:00 hr. )

SAARC Countries Calls metering interval :     2.0 sec (N)    2.6 sec (C)

Gulf & other Countries in Asia, Africa, Europe & Oceania Calls metering interval : 1.2 sec (N) 1.6 sec (C)

Rest of the Countries Calls metering interval :     1.0 sec (N)    1.2 sec (C)
INMARSAT SERVICE ( Land to Ship ) Call ( for ALL days at ALL Times )
Pacific & Atlantic Ocean Region 150 milli-sec.
Indian Ocean Region 260 milli-sec.

IRIDIUM Service (Motorola) Call from PSTN ( for ALL days at ALL Times )
Calls to SAARC Countries (008817) : 500 milli-sec
Calls to Other Countries (008816) : 250 milli-sec


How to Apply for STD ?
Please contact the DE (Intl) of your Exchange for details and application form.
For National STD call facility a letter will do, but for obtaining ISD facility, your photograph & signature will have to be attested by a Gazetted Officer.
Unless choice is exercised in the initial application form, One time charge for providing STD or barring STD : Rs. 50 /-.

LOCAL / STD / ISD - PAY PHONES
License for operating Local/STD/ISD - Pay Phone are allotted liberally to unemployed youths with minimum educational qualification Class-X (relaxed in certain cases) and minimum age of 18 years. Employment
Exchange Registration and Unemployment Certificate are essential pre-requisites.
Application to be made at concerned Commercial Office in prescribed forms. Licensee is allowed a commission on basis of the percentage of called units made from the Pay Phone.

(a) Franchisee will get commission at the following rates Monthly Gross Turn over Commission
Upto Rs. 20,000/- 16 % From Rs. 20,001/- to Rs. 50,000/- 15 % More than Rs. 50,000 /- 12 %

The minimum guarantee amount payable by the Licensee to the DOT is Rs. 1,600 /- for STD/ISD Pay Phones and Rs. 500 /- for Local Pay Phones. Service tax would be extra.

(b) Charges payable by users of Pay Phones :

i)    Local Calls
Rs. 1.31 /- per 5 minutes duration for each phone call dialing starting with digit 2 to 7, 96 ( Pager ) and 98 ( Cellular ).

Rs. 131 /- per 3 minutes duration for phone call dialing starting with digits 91 ( Group Dialing ).

The above rate of Rs. 1.31 /- is inclusive of service tax.

ii)    STD/ISD Calls
Rs. 1.31 /- per call unit. + Service Charge : Max., Rs. 2 /- for
each STD/ISD call. The above rate of Rs. 1.31 /- is inclusive of service tax.