Caller ID - BT PSTN & Freepbx

Hi ,

I am having trouble with a Grandstream Ht813.

Does anybody have the UK settings for Caller ID for BT Openreach lines?

I have created a PJSip trunk in Freepbx and added an in inbound route. The problem is Caller Id is showing up as the trunk number instead of the PSTN number.

Any ideas?

Thanks

No idea, but do you mean that incoming CallerID is wrong or is it the caller ID which is seen by anyone you call?

I have called the Freepbx trunk 5000 for example.

This is also the Sip username used on the Grandstream Ht813.

When you call from the PSTN Freepbx via the Ht813 answers the call bur the caller ID displayed is the Sip username (5000) instead of <area code > <Telephone number>

I am seeing a few references to the UK needing Line polarity reversal. I have that currently disabled should it be enabled?

It says check with PSTN supplier before enabling.

Edited by dlucas46 (Wed 09-Oct-24 23:55:58)

Hmm. All a bit random. If caller display is showing something meaningful albeit not the expected number, then I doubt line polarity reversal will have any bearing on it. At the moment, you don't know whether the display is the SIP username or the trunk name. Change one of them and try again to get a handle on this.

In reply to a post by dlucas46:

Does anybody have the UK settings for Caller ID for BT Openreach lines?

Openreach SIN227.

Sipura/Linksys/Cisco devices call this 'ETSI FSK with PR(UK)' or similar, the manual for the Grandstream HT813 suggests Caller ID Scheme should be 'SIN 227 – BT'

I already have that set.

Does the number of rings before the HT813 answers matter?

I read one setup for France and they said it the rings were below one you did not get caller ID working correctly.

Not for UK signalling, the caller ID handshake starts the detection process whereas other formats send the ID between first and second rings.

The image of the status page in the manual doesn't appear to display any CLID info, can you see any information in the Freepbx logs as to what information is sent in the SIP messages?

Not sure I understand your setup:

Do you have a BT analogue line (and some sort of FXS/FXO line card to convert analogue to digital in your Freepbx) or do you have a BT Digital Line?

If it is a digital line, then turn on logging on PJSIP to get the incoming SIP messages. The calling line ID can be in various SIP parameters. e.g. "From" header or p-asserted-identity. See whether you can find the CLID that you want to display and then change your dialplan to modify the message accordingly.

In reply to a post by essex_man:

Not sure I understand your setup:

Do you have a BT analogue line (and some sort of FXS/FXO line card to convert analogue to digital in your Freepbx) or do you have a BT Digital Line?

If it is a digital line, then turn on logging on PJSIP to get the incoming SIP messages. The calling line ID can be in various SIP parameters. e.g. "From" header or p-asserted-identity. See whether you can find the CLID that you want to display and then change your dialplan to modify the message accordingly.

I have a BT PSTN line that is running into a Grandstream HT813 with an FXO port.

I can get incoming and outgoing calls across the POTS line but the incoming caller ID is the Trunk name / Sip user of the HT813 ATA and not the caller ID from the BT PSTN.

In reply to a post by tdw42:

Not for UK signalling, the caller ID handshake starts the detection process whereas other formats send the ID between first and second rings.

The image of the status page in the manual doesn't appear to display any CLID info, can you see any information in the Freepbx logs as to what information is sent in the SIP messages?

I assume Pjsip logging would be enough to get the incoming sip messages from the FXO gateway?