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Port Used Avaya IP Office

Ports Used

The list below details many of the IP ports used by IP Office control units and IP Office applications. Many of these are standard ports for different IP traffic protocols.

left arrow Indicates a listening port on the IP Office control unit. right arrow indicates a port to which the IP Office sends, for example to
a PC running an IP Office application.

* Indicates that the port and or protocol can be changed.

Port Protocol Function
25* right arrow SMTP TCP Email system alarms from the IP Office to SMTP server. For Avaya IP Office 4.2 also used for Voicemail Email on Embedded Voicemail.
37 right arrow Time UDP Time requests from the Avaya IP Office to a Time Server (RFC868).
53 right arrow DNS UDP Domain Name Service responses.
67 right arrow BOOTP/DHCP UDP DHCP server operation.
68 right arrow BOOTP/DHCP UDP DHCP client operation.
69 right arrow TFTP UDP File requests to the Avaya IP Office.
69 right arrow TFTP UDP File requests by the Avaya IP Office.
80 right arrow HTTP left HTTP File requests.
161* right arrow SNMP UDP From SNMP applications.
162* right arrow SNMP Trap UDP To addresses set in the Avaya IP Office configuration.
500 right arrow IKE UDP Key exchange for IPSec protocol.
389* right arrow LDAP TCP Lightweight Directory Access Protocol.
520 right arrow RIP UDP To and from the Avaya IP Office to other RIP devices. For RIP1 and RIP2(RIP1 compatible) the destination address is a subnet broadcast, eg. For RIP2 Multicast the destination address is
520 right arrow RIP UDP
1701 right arrow L2TP UDP Layer 2 tunneling protocol.
1718 right arrow H.323 UDP H.323 Discovery
1719 right arrow H.323 RAS UDP H.323 Status. VoIP device registering with the IP Office.
1720 right arrow H.323/H.245 UDP H.323 Signalling. Data to a registered VoIP device.
2127 right arrow (UDP) UDP PC Wallboard to CCC Wallboard Server.
3478 right arrow SIP UDP Port used for STUN requests from the IP Office to the SIP provider.
5005 right arrow RTCPMon UDP RTCP Monitoring information from Avaya H323 phones.
5060 right arrowright arrow SIP UDP/TCP* SIP Line Signalling
8080 right arrow HTTP TCP Browser access to the Delta Server application.
8089 right arrow Enconf UDP From the Avaya IP Office to the Conferencing Center Server Service. User access to the Conferencing Center is direct via HTTP sessions.
8888 right arrow HTTP TCP Browser access to the Avaya IP Office ContactStore (VRL) application.
49152 to 53247* right arrowright arrow RTP/RTCP UDP Dynamically allocated ports used during VoIP calls for RTP and RTCP traffic. The port range can be adjusted through the System | Gatekeeper tab.
50791 right arrow IPO Voicemail UDP To voicemail server address.
50793 right arrow IPO Solo Voicemail UDP From IP Office TAPI PC with Wave drive user support.
50794 right arrow IPO Monitor UDP From the IP Office Monitor application.
50795 right arrow IPO Voice Networking UDP Small Community Network signalling (AVRIP) and BLF updates. Each system does a broadcast every 30 seconds. BLF updates are sent required up a maximum of every 0.5 seconds.
50796 right arrow IPO PCPartner UDP From an Avaya IP Office application (for example Phone Manager or SoftConsole). Used to initiate a session between the Avaya IP Office and the application.
50797 right arrow IPO TAPI UDP From an Avaya IP Office TAPI user PC.
50798 right arrow (UDP) UDP BT Fusion variant. No longer used.
50799 right arrow IPO BLF UDP Broadcast to the Avaya IP Office LAN and the first 10 IP addresses registered from other subnets.
50800 right arrow IPO License Dongle UDP To the License Server Avaya IP Address set in the IP Office configuration.
50801 right arrow EConf UDP Conferencing Center Service to IP Office.
50802 right arrow Discovery TCP Avaya IP Office configuration settings access.
50804* right arrow Service Access Protocol TCP Avaya IP Office configuration settings access.
50805* right arrow TCP ” TLS Secure.
50808* right arrow TCP Avaya IP Office system status access.
50812* right arrow TCP Avaya IP Office system status access.
50813* right arrow TCP ” TLS Secure.

. CDR/SMDR from the Avaya IP Office is sent to the port number and IP address defined during configuration and using either TCP or UDP as selected.


Avaya IP Office Monitor can be used to display IP packet details including the source and destination Port numbers. As well as displaying the port numbers (in decimal), IP Office Monitor also displays the names of more commonly used ports including IP Office specific ports.

For example “src = 23” is interpreted as “src = 23 (Telnet)”.

The list below details the ports currently decoded by Avaya IP Office Monitor. For a full list of assigned non-Avaya IP Office ports see http://www.iana.org/assignments/port-numbers.

  • 20 File Transfer [Default Data]
  • 21 File Transfer [Control]
  • 23 Telnet
  • 25 Simple Mail Transfer
  • 37 Time
  • 43 Who Is
  • 53 Domain Name Server
  • 67 Bootstrap Protocol Server
  • 68 Bootstrap Protocol Client
  • 69 Trivial File Transfer
  • 70 Gopher
  • 79 Finger
  • 80 World Wide Web-HTTP
  • 115 Simple File Transfer Protocol
  • 123 Network Time Protocol
  • 137 NETBIOS Name Service
  • 138 NETBIOS Datagram Service
  • 139 NETBIOS Session Service
  • 156 SQL Service
  • 161 SNMP
  • 162 SNMPTRAP
  • 179 Border Gateway Protocol
  • 1719 H.323Ras
  • 1720 H.323/H.245
  • 50791 IPO Voicemail
  • 50792 IPO Network DTE
  • 50793 IPO Solo Voicemail (i.e. Wave driver for TAPI)
  • 50794 IPO Monitor
  • 50795 IPO Voice Networking
  • 50796 IPO PCPartner
  • 50797 IPO TAPI
  • 50798 IPO Who-Is response
  • 50799 IPO BLF
  • 50800 IPO License Dongle
  • 50801 EConf


Avaya IP Office Monitor, as well as displaying the Protocol number (in decimal) of packets, also displays the names of the more common Protocols. For example “pcol = 1” is decoded as “pcol = 1 (ICMP)”.

Protocol numbers currently decoded by Avaya IP Office Monitor are:

  • 1 – Internet Control Message [ICMP]
  • 2 – Internet Group Management [IGMP]
  • 6 – Transmission Control [TCP]
  • 8 – Exterior Gateway Protocol [EGP]
  • 9 – Interior Gateway Protocol [IGP]
  • 17 – User Datagram [UDP]
  • 41 – Ipv6 [IPV6]
  • 46 – Reservation Protocol [RSVP]
  • 47 – General Routing Encapsulation [GRE]
  • 58 – ICMP for IPv6 [IPv6-ICMP]
  • 111 – IPX in IP[IPX-In-IP]
  • 115 – Layer Two Tunneling Protocol [L2TP]
  • 121 – Simple Message Protocol [SMP]

Performance figures, data and operation quoted in this document are typical and must be specifically confirmed in writing by Avaya before they become applicable to any particular order or contract. The company reserves the right to make alterations or amendments at its own discretion. The publication of information in this document does not imply freedom from patent or any other protective rights of Avaya or others.

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