Modifying port assignments 33Note: If the domain name is used, the STUN server domainshould be configured on the DNS server.—End—Configuring VoIP domain name informationTo connect IP Phone 1535 to your installed IP telephony services, you mustaccess and configure the SIP domain name, which is the Service DomainName configured on the SPS, or SLG if on a CS 1000 system.Step Action1 From the Main Menu, go to Settings > VoIP Settings > Misc. >Domain Name, and press OK to accept selection.2 Enter the SIP Service domain name as configured on the SPSor SLG, and on the Signaling Server. In the current setup,the Service domain name configured on the SPS or SLG issps2.competitive.com.3 Press OK to confirm changes.—End—Modifying port assignmentsYou can configure the parameters with UDP port values used to transport IPPhone 1535 operational information (Audio, Video, and Local), accordingto the particulars of your network environment.Step Action1 From the Main Menu, select Settings > VoIP Settings > Misc. >Ports and press OK.2 Select the port type to configure (Audio, Video, or Local), and pressOK. The following are the acceptable value ranges by port type:• Audio: Specify the port to be used by the IP Phone 1535 foraudio-related VoIP activity. You can configure this with a valuebetween 1024 and 65535 (The default value is 23000).• Video: Specify the port to be used by the IP Phone 1535 forvideo-related VoIP activity. You can configure this with a valuefrom 1024 to 65535 (The default value is 24000).Nortel Communications ServersNortel IP Phone 1535 Installation and CommissioningNN43160-300 02.03 StandardRelease 4.0/SN10 28 October 2009Copyright © 2009, Nortel Networks.