Troubleshooting guide
PAGE 19 of 36  VR GSM DOOR INTERCOM TECHNICAL MANUAL    VER2.0.0 
STORING A TELEPHONE NUMBER FOR DIAL IN DOOR RELEASE 
Dial in door release allows users of telephones with their number stored to release the 
door/gate simply by dialling the telephone number of the SIM in the intercom panel. The 
intercom panel will check the callers ID when it receives a call and if it matches the list of 
stored numbers, it will clear the call down (Avoiding the caller being charged for the call) 
and will activate the relay for the programmed time. The number of numbers thatcan be 
stored depends on the SIM card’s available memory. SIM cards are normally able to store 
100 – 250 numbers. The messages to check, store or delete numbers are as follows (See 
important note on page 18):- 
1111STNnnn”yyyyyyyyyyy”  Store the telephone number yyyyyyyyyyy in position nnn 
 where nnn = 100 - 250 
1111STNnnn”yyyyyyyyyyy”?  Store the telephone number yyyyyyyyyyy in position nnn 
          where nnn =100 - 250and send a confirmation text 
          message to confirm storage of new number. 
1111STNnnn?    Query the telephone number stored in location nnn 
          where nnn = 100 - 250. A text message will be sent to 
 the sender with the stored number for that location. 
1111STNnnn#    Delete the telephone number stored in location nnn 
 where nnn = 100 - 250.  
1111STNnnn#?    Delete and confirm deletion of a telephone number in 
          location nnn where nnn = 100 - 250. 
Memory location nnn can be in the range of 100 – 250. (Important note: Some SIM cards 
may use some of the memory locations for special features such as checking balance, 
retrieving voice mails etc. If you are not planning to use all memory location we would 
suggest storing from location 111 onwards. Use the chart on page 26-27 to record the 
telephone numbers stored. 
Note: It is important to switch off voicemail and automatic SMS features on the SIM 
card when using this feature. See the ‘Forced Dial’ section for more details. Also 
note that it will not be possible to use the dial in and program facility from a number 
stored to release the door/gate when dialling in. 
SET CALL TIME 
The call time is the maximum time in seconds that a call can last before the intercom panel 
automatically clears the call down. The time can be from 20 seconds up to 240 seconds (4 
minutes) and begins from when the call button is pressed. The default time is 40 seconds. 
The following messages are used to set/check the maximum call time. 
1111SPTnn  Store the time nn x 20 seconds (e.g. nn = 03, time = 60 
 seconds. 










