telecom bd

Call Block Service enables subscribers to easily block unwanted calls to their mobile phones anytime, anywhere through its Blacklist feature. Recently, Grameenphone has also introduced the Whitelist feature to allow only certain numbers to be able to call the subscriber, keeping all other callers blocked.

Subscription Process:

Any GP subscriber can subscribe to the Call Block service.
SMS: Type Start CB and send to 5678
USSD: Dial *111*1*1#
IVR: Dial 5678

Unsubscription Process:

SMS: Type Stop CB and send to 5678
USSD: Dial *111*1*4#
IVR: Dial 5678

To make it easy for the subscribers, GP has introduced a fully functional USSD menu for this service, which will guide the subscriber through all the features of this service. This can be done by dialing *111# and follow the instructions.

Product features and usage:

A GP subscriber can block/allow as many numbers as s/he wants starting with first 10 free slots. For example, a subscriber blocked 10 numbers by using first 10 slots. After a period, s/he can delete one number from the slot and add another number with no additional charge. In this way, the subscriber can remove any number from the first 10 slot to add new numbers in the Blacklist/Whitelist. After free first 10 number slots, subscribers have to pay for each number he wants to block/allow from 11th to 20th slots.
For your convenience, Grameenphone Ltd. has introduced “Weekly charging” feature for Call Block service, applicable for eligible prepaid subscribers only. This feature enables all Smile, djuice, Apon, Shohoj, Bondhu, Business Solutions prepaid, Ekota, and Badhon subscribers to avail the Call Block service on a weekly basis at BDT BDT 7 (+ 15% VAT) per week. Existing Call Block users, who subscribed for 30 days – will be able to enjoy the full 30 days of the service, and will be converted to Weekly subscriptions once the 30 days are expired.

Tariff:

• BDT 7 / week (pre-paid subscribers) & BDT 30 / month (post-paid subscribers) for availing call block service
• Initial 10 slots additions/modifications/deletion to the blacklist/whitelist is free.
• If subscriber has already filled up 10 slots in the blacklist/whitelist with number, BDT 10 (BDT 2 port + BDT 8 service) additional charge will be applicable
• Initial 10 slots additions/modifications/deletion to the blacklist/whitelist is free
• If subscriber has already filled up 10 slots in the blacklist/whitelist with number, BDT 8/number additional charge will be applicable
• SMS charge: Free
*15% VAT applicable in all charges. *Prepaid subscribers are charged from account balance on real-time. *Postpaid subscribers are billed in monthly invoice.

Notes:

For SMS based usage, the keywords are given below:

Sl	Action	Keyword	Example
1	To subscribe	Start CB	Start CB
2	To add number to blacklist	ADD<space>Number	Add 017xxxxxxxx
3	To delete number to blacklist	DEL<space>Number	Del 017xxxxxxxx
4	To modify number in blacklist	CH<space>Old Number <space>New Number	CH 017xxxxxxxx 017xxxxxxxx
5	To see current blacklist	LIST	List
6	To activate the blacklist	ON	On
7	To deactivate the blacklist	OFF	Off
8	To add number to whitelist	W ADD<space>Number	W Add 017xxxxxxxx
9	To delete number from whitelist	W DEL<space>Number	W Del 017xxxxxxxx
10	To modify number in Whitelist	W CH<space>Old Number<space> New Number	W CH 017xxxxxxxx 017xxxxxxxx
11	To see current whitelist	W LIST	W List
12	To activate the whitelist	W ON	W On
13	To deactivate the whitelist	W OFF	W Off
14	To view active list status	VIEW	View
15	To Unsubscribe	Stop CB	Stop CB
16	For Help	HELP	Help

Valid Number formats:

Mobile: e.g. 017xxxxxxxx, 019xxxxxxxx, 018xxxxxxxx, 011xxxxxxxx, 016xxxxxxxx, 015xxxxxxxx.
Private PSTN: e.g. 037xxxxxxx, 0644xxxxxxxx etc.
BTCL: Area Code + Number e.g. 02xxxxxxx, 031xxxxxxx etc.
* Using 880 is not mandatory for numbers in Bangladesh.
ISD: 00 + Country Code + Number e.g. 0044xxxxxxxxxxxxxx, 0091xxxxxxxxxxxx etc.
*Charges and VAT apply

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how to use
sms "sub" to 8181 to subscribe to call block service. once you have subscribed successfully you can do the following,

• can create a "blacklist" of callers whom you don’t want to talk to i.e. the numbers added to the blacklist would not be able to disturb you.
• can create a "whitelist" by which you can choose the selected few who can call you - rest of the all number would not be able to call. this feature comes handy when you are travelling with your international roaming option activated.
• have the option of shuffling between whitelist and blacklist. however you can choose only one option at a time.
• can add 10 free numbers to your blacklist / whitelist after subscribing.
• can have sms notification to inform you blocked caller’s number and time of call.
• can deactivate /activate the service feature anytime without unsubscribing the service.

sms syntax of the service

type of command	syntax	example
to subscribe	sub	sub
to add number to blacklist	add msisdn bl	add 0191xxxxxxx bl
to see current blacklist	view bl	view bl
to delete number from blacklist	del msisdn bl	del 0191xxxxxxx bl
to add number to whitelist	add msisdn wl	add 0191xxxxxxx wl
to see current whitelist	view wl	view wl
to delete a number from whitelist	del msisdn wl	del 0191xxxxxxx wl
to see current active list	view	view
switch to whitelist	switch wl	switch wl
switch to blacklist	switch bl	switch bl
to unsubscribe	unsub	unsub
to know keywords	help	help
to deactivate the features	off cf	off cf
to reactivate the features	on cf	on cf
add block	addb	addb
to get the filtered call log	get	get

sms short code: 8181
charges

• subscription fee: tk. 15/15days (+vat)
• adding number to blacklist/whitelist: tk. 5/number (after first 10 free numbers) (+vat)
• sms charge applicable

frequently asked questions
1. how do i choose my ’screening condition’? can i have both ’black list’ and ’white list’ condition activated at the same time?
ans. the screening conditions are based on the active list present for a subscriber. if a subscriber is having active blacklist the numbers present in the black list will be screened. if the subscriber is having active white list, the numbers which are not in the white list will be screened. a subscriber can have only one list either white or black list as his/her active list
2. will black list be selected as my default screening condition if i subscribed to the service and add numbers to white list in the beginning?
ans. subscribers newly subscribing to call block will be enabled with active black list by default. he/she has to first start adding numbers to the black list to start screening the numbers. if the active list is black list and no numbers are present then none of the calls will be screened. adding of white list number does not carry any meaning in this condition
3. how can i check which ’screening condition’ i am belonging to at the moment?
ans. you can send keyword "view" to 8181 for getting the present active list.
4. what will happen if my condition is set to ’black list’ but there are no numbers added to my black list?
ans. all the calls will be allowed.
5. what will happen if my condition is set to ’white list’ but there are no numbers added to my white list?
ans. since the subscriber is in active white list and no numbers are present in the white list no body will be able to reach the subscriber.
6. maximum how many numbers can i add to my black/white list? ans. you can add as many as 15 numbers in your black/white list.
7. what will happen if i try to enter an incomplete number to black/white list?
ans. if a subscriber adds a number in an incomplete manner (example: 01927) to his/her black list and the subscriber has an active black list, this entry will be taken as a wild card entry and the range number range 1927* will be blocked and any call from number starting with 1927 will be blocked.
8. how frequently can i update my black/white list (i.e. add/delete numbers)? is there any minimum waiting period before the changes are made?
ans. there is no waiting time for the changes to get updated. the number addition and deletion are immediate.
9. maximum how many numbers can i add/delete at once?
ans. a subscriber can add/delete only one number at a time.
10. can i block/allow numbers from other mobile networks or any types of phone numbers e.g. pstn, international numbers (i.e. mobile and land phone)? ans. yes you can block calls from other mobile networks by adding the number into your black list (example: 017xxxxxxxx, 018xxxxxxxx etc). same way you can add any pstn or international numbers (number with isd code and area code).
11. will my black/white list remain if i un-register from the service and then reregister later? ans. the list entry will be deleted when the subscriber unsubscribed from the system
12. do i need to use any special handset? ans. subscriber can use any handset that supports sms.
13. does my handset need any type of configuration? ans. no configurations are required in the handset
14. can i use or activate call block service (black/white list) while roaming? ans. the call block service can be used while roaming also.