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TFTP/Config Server

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This article provides information about the TFTP/Config Server addresses for all instances (clusters) used for programming 400-series IP phones and Cisco 7900-series IP phones in your Sky phone system.

Table of Contents

TFTP/Config Server Overview
Instance (Cluster) Specific TFTP/Config Server Table
Changing TFTP/Config Server On Your Phone

TFTP/Config Server Overview

TFTP, which stands for Trivial File Transfer Protocol, is an IP address setting used to reboot phones when a phone requests a download of its configuration file and firmware. Note that Cisco phones refer to this IP address as the "TFTP" setting, while 400-series phones refer to this IP address as the "Config Server" setting.

Instance (Cluster) Specific TFTP/Config Server Table

Use the table below to determine the correct TFTP/Config Server addresses and the Server/API Port Number required to program your phones. These TFTP/Config Server IP addresses and port numbers are organized by the instance (cluster) assigned to your organization. In the table below, "TFTP/Config Server 1" addresses are primary and "TFTP/Config Server 2" addresses are secondary to provide geographic redundancy failover capabilities. A phone utilizes these IP addresses to reboot after an outage or other interruption of phone service. The port number indicates the firewall port that needs to be accessed on each customer's server. Your IT personnel or IT partner should ensure that the port number for your instance (cluster) is not blocked on your firewall or computer. Configure firewalls to allow inbound/outbound traffic as indicated below:

  • Proxy.m5net.com:8XXX TCP (where 8XXX is the Server/API Port Number for the instance (cluster) assigned to your organization.

Each customer's Sky phone system is connected to a specific server known as an instance (formerly known as a cluster). Authorized Contacts can identify the instance (cluster) for their account from the Account Details screen in the Sky Account Portal. For more information, see the Account Facts section of our Account Details article. If you still have questions about the instance that is assigned to your account, contact your Sky Account Manager or Support.

Instance (Cluster)Primary TFTP/Config Server 1Secondary TFTP/Config Server 2Server/API
Port Number
ABE208.103.83.24199.101.105.1778110
BEA208.103.83.25199.101.105.1788111
COY208.103.83.36199.101.105.1308107
DEB208.103.83.153199.101.105.1798109
ELI208.103.83.26199.101.105.1808112
FEZ208.103.83.131199.101.105.1318106
GEM66.11.207.75199.101.105.1348081
GRA208.103.83.22199.101.105.1708105
ICE66.11.208.101199.101.105.1368085
JAK208.103.83.11199.101.105.1648098
JIL208.103.83.27199.101.105.1818113
KAY66.11.208.125199.101.105.1388086
KIP208.103.83.28199.101.105.1828114
LOU66.11.207.37199.101.105.1418087
LYN208.103.83.29199.101.105.1838115
MOE208.103.83.30199.101.105.1848116
NED66.11.208.197199.101.105.1448089
OBI208.103.83.31199.101.105.1858117
OLA66.11.207.106199.101.105.1468090
PEZ208.103.83.15199.101.105.1868118
POE208.103.92.5199.101.105.1488091
QUA208.103.92.7199.101.105.1508092
QUO208.103.83.16199.101.105.1878119
RED66.11.207.21199.101.105.1528082
SAL208.103.83.149N/A8108
SKY208.103.83.2199.101.105.1328093
TAU208.103.83.4199.101.105.1548094
UKE89.187.126.213N/A8095
VOX208.103.83.6199.101.105.1568096
WIL208.103.83.8199.101.105.1588097
YIN208.103.83.34199.101.105.1668099
ZOE208.103.83.20199.101.105.1688104

Changing TFTP/Config Server On Your Phone

To access instructions for changing the TFTP/Config Server IP address on your phone, click the link below that corresponds to the phone model you are using:

IP480, IP480g, and IP485g
Cisco 7940 and 7960
Cisco 7942 and 7962
Cisco 7941, 7961, 7970 and 7971
Cisco 7945, 7965, and 7975
Cisco 7937 (conference phone)
Cisco ATA
TFTP/Config Server
TFTP
Additional Information
  • Remote Phone - When using a phone at your home office or other remote location, you will need to verify that your primary "TFTP" or "Config Server" address is set correctly.
  • Live CD - On occasion, your phone may have issues connecting to the correct firmware. If this happens, you can ship the phone to Sky Support to be upgraded. Optionally, if you are using a Cisco phone, you can download a Firmware Upgrade from our Live CD article.
  • Data Network Best Practices Guide - Requirements for the Sky hosted local customer network environment.
  • MiCloud and Sky Support - If you have any issues with TFTP or Config Server settings, contact Sky Support.
  • Account Portal - For information about navigating the online portal where Sky features and services are managed.
  • Support Cases - To request changes or resolve issues to communicate information to Sky Support.
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