my initial thought is PRI but I only work with 3CX so cant be sure, check this article to see if it helps
http://www.experts-exchange.com/Networking/Telecommunications/IP_Telephony/Q_24603802.html Jean-Paul Natola From: [email protected] To: [email protected] Subject: [NTSysADM] Caller ID on Outbound Calls from Avaya IP Office Date: Fri, 3 Oct 2014 20:35:20 +0000 Wanted to reach out to see if anyone else has had the same issue we’re experiencing below. Issue When making an outbound call, sometimes the receiving caller ID will display our corporate number (847.255.1852), where other calls will display the number of the DID (IE: 847.890.4021). System Setup - We’re using an Avaya IP Office 500 v9 (with a special build from Avaya) with twenty Avaya 9611G IP Phones and 160 IP Office Video Softphones. - There are currently three different circuits plugged into the IP Office system: o PRI Circuit – This circuit has our corporate number, as well as all toll free numbers. o PRI Circuit – This circuit has all of our DIDs. o 3MB SIP Trunk – acts as a spill/failover for the PRI circuits. o Each PRI circuit has 46 inbound/outbound lines for a total of 92 lines. Example of what’s happening 1. I make an outbound call from my office phone (can be either the softphone or 9611G IP phone) to my cell. When I look at my cell, the number that appears is our corporate main line (847.255.1852) and not my DID (847.890.4021). 2. As I end the first call, wait 1-2 minutes, then make another call to my cell phone and look at the caller ID, it shows 847.890.4021 (DID). Is this an issue with the routing between the PRI circuits or within the Avaya IP Office? Regards, Cameron ______________________________________________ Cameron Cooper | IT Manager | Aurico Direct: 847.890.4021 | Cell: 224.688.2854 | Fax: 847.255.1896 [email protected] | www.aurico.com CONFIDENTIALITY NOTICE: This email message is intended only for the person or entity to which it is addressed and may contain confidential material. Any unauthorized review, use, disclosure, downloading, copying or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and permanently delete all copies of the original message. If you are the intended recipient but do not wish to receive communications through this medium, please advise the sender immediately.

