I think, therefore, that this "failure" does not matter, but I would be interested to know if this is a correct assumption as it also potentially points to a problem of some kind that could affect the W60 from being unable to register even though the phones in the office work fine. In most cases if businesses change their equipment or move their service to a new provider it will initiate a change however if a business simply ceases (BT’s risk) or the kit is stolen there may be an issue (customers risk). BT owned equipment should be returned and yes BT really should clearly label their kit and their process however they should also ensure that equipment cannot simply be acquired and used on a customers account. Designed in modern and elegant style, this compact DECT IP base station possesses a wire-hidden design, presenting a concise and tidy desk to you even being mounted to the wall. By supporting Opus codec, Yealink W60B consistently delivers excellent and profes- sional audio quality in both high-bandwidth and poor network conditions, comparing with other wideband or narrowband audio codecs.

BT appears to have restricted the reset on the GUI but may not have considered all the scenarios of the connect button reset. The handsets, eg the W53H, have a dedicated 'Transfer' button 'TRAN'. This lets you transfer a call to someone else. So i used a logical workaround: I then managed to reset the handset in settings which failed before and then pressed the connect button on the base and managed re-register the handset from settings it then paired ok. If there are multiple lines assigned to your handset as outgoing lines, press the Line soft key to select the desired line. If a line is not selected, the handset uses the default outgoing line to dial out.The phone provisions happily over 5001 as we allowed this port to forward to the SBC on our CISCO firewall in the office. We did see during the config process that the NAT entries could not be created for a group object, however do we have access to remote CCTV cameras etc fine, and with no specific NAT rules, however the CISCO router ACL (Access control List) has been setup for both our office cameras which work and also the SBC ports 5001 and 5090 allowed in and forwarded to the SBC, in the same way and is presumably why the phone provisions successfully. Is anything missing in our setup here? Finally you need to create a DECT device entry in 3CX, set it to SBC, fill in the blanks just like the guide describes, and paste the correct URL into the freshly reset base. -> Final goal Compact as it is, the Yealink W60B DECT Base works seamlessly with the entire Yealink DECT handset range and repeater.

Ok either your network is more complex then you describe, or you (and your head of IT) are really not understanding how 3CX is architected.. The standard for most firewalls is to deny all new inbound traffic, allow all outbound traffic, and to allow any inbound traffic in response to outbound traffic. Since all the phone and SBC traffic is outbound or inbound in response to outbound traffic you do NOT need any port forwarding, assuming your previous statements are correct. The SBC and the phone should be on the same LAN, thus the firewall should not be seeing any traffic between them, and thus no port forward. And the SBC has nothing listening on port 5001 since that is the web administration port for 3CX which is in GCP according to you. If you do not have a simple network then you need to describe or provide a network diagram. By simple I mean this: You need to begin with a PBX that has been deployed properly (meaning the firewall rule entry is removed manually, and recreated by PBX Express automatically) -> This is one variable eliminated This chapter describes how to identify Yealink phone model, requirements that must be met and how to register the phone using manual configuration or auto provisioning. Note: You can ignore an incoming call by pressing the Silence soft key or reject an incoming call by pressing .This chapter describes how to use a DNS SRV record which specifies the location of the PBXware. NOTE: Your DNS Server needs to be configured correctly for this to work. Bicom Systems can provide service to set up this for you. Features -> General Information -> Fwd International --> set to Disable (no need to allow forwarding to international numbers)