Hello Nishit thank you for your message,
for your idea in #12794 – we have asked site admin and they said that you can set up a default search for the following options:

Permanent search:
Group 1:
xxxxxx7777
xxxxxx8888
xxxxxx9999

Group 2:
xxxxxxx000

Group 3:
xxxxxx6666
xxxxxx5555
xxxxxx4444
xxxxxx3333
xxxxxx2222
xxxxxx1111

However please allow site admin to stop these default searches when telecom provider on maintenance or any other reasons.

Please also when you do the search notifications let them sent to the following email address (notifications@voip.us) but with different header so we could see which notifications coming from Voip and which from NanoTel projects.

Cheers