External forwarding using PRI

[Phonedaddy]

We are trying to forward externally a DID number to a cell phone using feature 4, the trunk group access, and the forwarding destination. The phone appears to be forwarded, but we only receive returning dial tone from the calling end. Using BCM monitor the call appears for a split second and this is when we hear the return dial tone.

Does the service provider handle the transfer or does the BCM create a conference using two channels to send the call?

 

[hawks]

Check with your provider and make sure that they allow the calling number to go though. Alot of them will see the calling number information and reject the call because it is not a number in your trunk group.

 

[MikeDThePhoneGuy]

When your forwarding out of the BCM it is making a conference call...using 2 lines, one in, one out.

 

[Phonedaddy]

I thought that when you use a PRI and external forwarding that the call is actually transferred within the service providers switch(using the D channel) and frees up the channel towards the PBX. Using redirect on analog DID's or POTS is when I thought it used two trunks via conference.

If we call the forwarded extension from another internal extension via intercom, then the call forwards externally as expected. When we call the DID when forwarded, we hear a dial tone, but there are no trunks active on the BCM monitor that would indicate our side is providing the dial tone we are hearing on the calling end.

I'm pretty sure I have this working correctly at another site that uses DID's and PRI and the BCM setup is the same, only using a different service provider.

 

[cook1082]

The releasing of channels is using MCDN between 2 systems networking where a call comes into sys A and gets transfered to sys B then either gets transfered or forwared back to sys A then it will release the line and only use one A pri on a call forward fo transfer will use a second line to dial out and use the 2 line for the leingth of the call.
Do you get the same thing if the call is answered by another phone and transfered to forwared Ext?

 

[Phonedaddy]

I have not tried transferring an outside call to the forwarded extension but I will contact the customer and try it to see what happens.

 

[Phonedaddy]

Dang, cant edit a submitted post............ anyway, I'm wondering if there may be something in the remote access package that needs to be enabled?

 

[cook1082]

I had this with a VOIP PRI and it did what Hawks said. The provider change its protocal to SIP and then it worked . Who is the provider?

 

[Phonedaddy]

The provider is Nuvox/Windstream. Did you have to make any changes to the PRI config on the BCM side to accomodate the SIP protocol?

 

[Phonedaddy]

A Nuvox tech called us back today and suggested the customer upgrade to a product called VOIP2. This product gives control of the outbound numbers to the customer, where the current product will only allow outbound calls to complete if they are part of the customers listed group. If the PRI was a TDM circuit and not VOIP then it wouldnt be an issue.

Thanks for everyones input, it helped get us on the right track. -Bill-

 

[cook1082]

No because it was still a PRI from a router. The SIP question answer.

 

[Hewcrew5]

When forwarding off switch, you need to go into the DN, Under Capabilities and "allow redirect". That will then let you enter in a 11-digit number.