Telex IP-223 technical manual Use Dhcp Server Check Box, Unit IP Address Field, Subnet Mask Field

Setup Information

Base IP Setup

Use DHCP Server Check Box

The Use DHCP Server check box indicates whether or not DHCP (Dynamic Host Configuration Protocol) is used. If selected, DHCP allows the IP-223 to acquire all of the information for operation on the network bypassing its manual entry.

NOTE: Telex does not recommend operating with DHCP enabled. Operating with DHCP enabled may cause the base IP Address to change unexpectedly making changes to the software setup more difficult. If employing 5/6-tone selective calling and messaging, DHCP must not be used.

Unit IP Address Field

The Unit IP Address field identifies the unique base address assigned to the IP-223. This address identifies the unit for operations such as setup, software upgrades and communications in some operating modes.

Subnet Mask Field

The Subnet Mask field identifies information used by the IP stack to determine if an IP Address is local or if an IP Address requires the use of a gateway to be reached. Contact your network administrator to obtain the proper value for this field.

Gateway Address Field

The Gateway Address field identifies the IP Address of the node used to reach other networks. Contact your network administrator to obtain the proper value for this field.

DNS (Domain Name Server) Number 1–3 Fields

The DNS Number 1–3fields are currently not used by the IP-223.

Packet Setup

Packet Delay before Playback Field

The Packet Delay before Playback field identifies the length of delay before playback (jitter buffer). The IP-223 utilizes a 20ms UDP/IP (User Datagram Protocol/Internet Protocol) packet to encode audio. Some buffering of these packets must occur before playback to help absorb network delays, jitters, and lost packets. The typical entry for this field is 6, which translates to a delay of 120ms before playback (each packet is 20ms of audio). Larger values may be required for complicated networks, and smaller values for less complicated networks.

The range for this field is 4 to 29.

QOS (Quality of Service): Precedence Bits Field

The QOS: Precedence Bits field is used to set the priority level of network traffic. Typically this value is left at 0 for normal traffic and 5 for voice traffic.

The range for this field is 0 to 7.

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