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Article ID: 000029952
Last Modified Date: 05/15/2021
Access Level: Public

IP40: Frequently Asked Questions

What is an IP40 PoE? IP40 PoE is a Session Initiation Protocol (SIP) based Voice over IP (VoIP) audio processor that support Power of Ethernet (PoE). The IP40 registers with a SIP proxy to provide a direct media path from the Ethernet to a Plantronics headset without the need for an IP phone or PC. How is the IP40 PoE powered? The IP40 can be powered in two alternative modes. In normal operation, the IP40 would be powered directly from a suitably provisioned 802.3af Power-Over-Ethernet (PoE) network switch. If no PoE is available, the device can be powered by a Plantronics standard AC adapter No.77391 with adapter 76486-01-15. The IP40 is a Class 1 PoE device. What contact center systems will the IP40 work with? The IP40 should work with any standards based SIP contact center but has been specifically validated against the following SIP implementations:
  • Interactive intelligence V2.5
  • Avaya Call Manager and SES 3.1.4
  • Cisco Unified Communications Manager 6.1
  • Aspect 6.5.1 and Aspect Proxy
  • Genesys SIP Sever 7.6 Stream server 7.6
  • Asterisk  
Where do I find the Administrative Guide for the IP40? The Administrative guide is available for download from the Plantronics support site. Why does the IP40 PoE have a second Ethernet port? The second Ethernet port is provided to allow the PC on the desk to share a single network drop with the IP40. The IP40 is able to tag the Ethernet packets to prioritize the voice traffic over the data traffic from the PC. What type of headsets can I use with the IP40? The IP40 supports the Plantronics 'H' Series of headsets. Noise canceling microphones are recommended. How do I answer incoming calls? You can accept incoming calls by pushing the IP40 Answer/End button or clicking on the call answer button on the contact center interface on the agents PC. The IP40 can be configured to 'auto answer' calls if required. How do I make an outbound call if the IP40 doesn't have a dial pad? Normally, you initiate outbound calls via the contact center interface on your PC, which then instructs the IP40 to call the number. If your interface becomes unavailable, the IP40 can still make an outbound call to a preconfigured number by pushing the Answer/End button on the device. How can I put a call on hold if I want to leave my desk? When you are on a call, you can place the call on hold by disconnecting the headset's Quick Disconnect (QD) cable. The Answer/End button changes color to orange to indicate a call is on hold. When you reconnect the QD, the call resumes and the Answer/End button returns to green. How do I find the IP address of the IP40? When the IP40 has received an IP address as part of a Dynamic Host Control protocol boot procedure, you can identify it by pushing the Answer/End button for at least 5 seconds. The IP address is dictated as a string of numbers into the connected headset. How much power does the IP40 use? The IP40 is an 802.3af PoE Class 1 device. It uses less than 4W. What are the bandwidth requirements for the IP40? When voice traffic is passed through an IP network, the bandwidth requirements of the connection are larger than the codec of the voice stream. The actual codec requirements of the voice stream are 64 Kbit/s for G711 (i.e., PCMU or PCMA) and 8 kbit/s for G729. To transport this across an IP network, the requirements increase to 95 kbit/s and 39 kbit/s, respectively. This increase is due to the packet overheads introduced by the IP protocol. The advantage of VoIP is that this bandwidth is only required when someone is speaking, and the overall bandwidth available can be shared between the various competing applications when not required for the VoIP stream. Voice packets can also be tagged to ensure they get a higher priority than data packets as they traverse the network What are the recommended bandwidth requirements to run a VoIP device like an IP40 from a home network over the internet? Typically a home DSL network that provides 1Mbps DSL downstream and 384K upstream is adequate if you are not downloading video or watching YouTube on your local home network. The G.711 codec can be used to provide the best voice quality (PCMU or PCMA at 64kbit/sec). If bandwidth is limited, the Administrator can configure the IP40 to use the G.729 codec with 8kbit/sec. For 1 Mbps DSL downstream, the actual bandwidth capacity is 1 Mbps. A single voice traffic stream will take only 95 kb/s, which is a tiny amount compared to the capacity available for data. Note there is no quality of service (QoS) guarantee on most DSL network connections and so if a lot of data is downloaded while making a call it is possible the voice stream may become degraded. What are typical services/devices required to run an IP40 in an IP network? There is no extra equipment required for the IP40 beyond servers/services found in any enterprise VoIP equipped network. Configuration maintenance and operation use existing resources. In a contact center environment, the IP40 needs to connect to a SIP proxy which usually resides in IP-PBX (i.e., Aspect's proxy) in order to send or receive calls. The IP40 has been validated for agent client with SIP based communication with Cisco, Avaya, Aspect, Interactive Intelligent and Genesys. Below is a list of typical servers/services you will find in an enterprise network:
  • Network Servers/services - DHCP, DNS, HTTP/FTP
  • Call Server supporting SIP, from either Cisco, Avaya, Aspect, Interactive Intelligence Genesys, and Asterisk
  • Ethernet switches
  • Router with SIP aware Firewall
  • IP Phones