atcomsystems.ca/forum Forums TDM Business Telephone Systems NEC Telephones & Systems SV9100 - Transfer off premise

Hi all,

I am trying to forward all call on an extension to an off premise number. Dialing that extension internally works as expected. It forwards the call, and if the mobile user doesn't pick up, it will go to the mobile voicemail.

With outside callers, the mobile phone would ring twice and go back to the voicemail of the desk phone. Any ideas why it is doing this?

I have played around with the timers on 24-02 with no luck. Also checked 20-29 for a different timer class, but it's not that either. Appreciate all you help.

Looks like it's a "Supervised" transfer. if it was unsupervised then the call could not be recalled to the desk.

I would setup these users in separate timer classes.
What is the time between when the call is transferred to the mobile phone and it begins to ring?

I'm using Call Forwarding, it shouldn't be supervised, correct?


I would say around 2-4 seconds. I tried putting it in a different timer class as well, and doesn't seem to make a difference.

Did you make the changes in the timer class settings? By default all 15 are the same.

I changed my extension to timer class 1 in 20-29, and then changed the transfer recall and delayed called forward for timer 1 in 20-31.

It's weird that I can dial by extension and have it forwarded correctly, but not from the outside.

Are you using analog lines? Sounds like you are.

Are the 4 fields populated under call forward type?

It should be digital. I'm using the NEC DT400 series desktop phones.

Which fields are these under? 24-09?

I grew up in fremont ca in the 1950's and 1960's . The population was about 15 ,000