caller ID display problem on extension?

Posts: 3 · New Forum Member Joined: Feb 08, 2006 Posts: 3

our network setting is like: cable-->router-->switch-->Linksys Voip box-->pbx.
from pbx log, we can see the incoming caller id, but nothing's shown up on extension.

with our previous Voip provider, caller id could be successfully shown up on extension. Vonage service rep. said it's our pbx problem, but we did not change any network setup or pbx configuration, just switch to Vonage.

any clue about this problem?

Posts: 1715 · Posted: Thu Feb 09, 2006 12:36 am Post subject:

if you're able to see the CallerID on the PBX log, the PBX is receiving callerID. Most PBXs use proprietary phones, so it's up to the PBX to re-transmit the CallerID in a format the system phones understand. Doesn't look like it's Vonage's problem at this point. What type of PBX?

Posts: 3 · New Forum Member Joined: Feb 08, 2006 Posts: 3

But the problem is why the caller id's just disappearred since we switch to Vonage?
Nothing changed on network structure, pbx settings, extension phone.

We are using Altigen PBX.
Is there any ways we can test to see which part has the problem? Unfortunatelly currently we don't have land line in the office.

Posts: 1715 · Posted: Sun Feb 12, 2006 12:16 am Post subject:

I've never heard of Altigen, not sure what their systems are like.

Here's the thing...if the PBX logs are showing the proper CallerID, then the problem 100% exists in the PBX. Which port(s) did you have the land lines going into previously? which ports are Vonage lines going into? Your best bet is to contact your installer and/or Altigen and tell them your problem. As to why it's only appearing now, I'm not sure. Which Linksys Voip box are you using and which firmware version is it running?

Posts: 282 · Posted: Sun Feb 12, 2006 1:14 am Post subject: Re: caller id on extension

friendbear wrote:

But the problem is why the caller id's just disappearred since we switch to Vonage?
Nothing changed on network structure, pbx settings, extension phone.

We are using Altigen PBX.
Is there any ways we can test to see which part has the problem? Unfortunatelly currently we don't have land line in the office.

There are two different data formats for the caller id information. I don't know which Vonage uses, but is it possible that they use a different format from what you were previously receiving and that is the source of the problem?

http://www.melabs.com/resources/callerid.htm

Posts: 1715 · Posted: Sun Feb 12, 2006 10:13 pm Post subject:

Vonage uses Bellcore MDMF... never seen them send out an SDMF on either the RT31P2 nor RTP300.

There's actually multiple CallerID formats out there. Depending on which Linksys adapter you're using, the following CID formats may be available:

Bellcore FSK (N. America, China)
DTMF (Finland, Sweden)
DTMF (Denmark)
ETSI DTMF
ETST DTMF With PR
ETSI DTMF After Ring
ETSI FSK
ETSI FSK with PR (UK)