Result of Connection Test between IP-PBX and sXGP terminals in FY 2022

XGP Forum (at ARIB in Tokyo, Japan. Chairperson: Hideyuki Iwata, CEO and S.V.P. of TTC in Japan) has revised "Guideline for Connection Test of sXGP System" and conducted a connection test of mid-call handover between APs across two EPCs assuming large-scale enterprises. The connection test met with a good result.

 

XGP Forum has been standardizing a new TD-LTE-based wireless technology, license-free ”sXGP system”, as a radio station which uses 1.9GHz band and vigorously participating in the review meeting of technical requirements set up by Information and Communications Council(“ICC”) under MIC.

Reference: TD-LTE scheme innovates on 1.9GHz Digital Cordless Telephone system

 

Then, in order to promote the deployment of this method, we informed of the following initiatives.

Reference: Efforts to spread and promote sXGP

 

In response to ICC’s preliminary answer on March 31, 2017 and amendment enforcement of ministerial order for sXGP System on October 1, as well as the issuance of standard specification by ARIB, XGP Forum issued test guidelines. Based on the guideline, we have conducted tests continuously with participating companies in this Forum since FY 2018 and have achieved good results.

"Reference provision"

・Ordinance on Radio Equipment (MIC No.60 of 2018) Article 49-8-2-3

 (Radio equipment of Radio Station used for Time Division・ OFDMA Digital Cordless System)

・ARIB Standard STD-T118 "Radio equipment used for OFDMA/TDMA TDD for digital cordless telephone"

・Ministerial Ordinance to Partially Amend Regulations for Enforcement of the Radio Law and Ordinance on Radio Equipment (MIC No.113 of 2020)

 

Reference

Result of Connection Test between IP-PBX and sXGP terminals on March 23, 2018

Result of Connection Test between IP-PBX/Business phones and sXGP terminals on February 14, 2019

Result of Connection Test between IP-PBX/Business phones and sXGP terminals in FY 2019

Result of Connection Test between IP-PBX/Business phones and sXGP terminals in FY 2021

 

This time, we have also revised the implementation guidelines, adding test items of mid-call handover between APs across two EPCs.

Based on the revised test guideline, the test was co-hosted by HATS Forum (Secretariat: Communications and Information Network Association of Japan (CIAJ), Chairman: Tadao SAITO, Professor Emeritus of the University of Tokyo) and met with a good result.


 Summary of test Result

1. Test period:

  Connection test of mid-call handover between APs across two EPCs: November 8~10, 2022

2.Participating Company(Random order)

  Accuver Co., Ltd(Accuver)

  NEC Platforms, Ltd

  Oki Electric Industry Co., Ltd.(OKI)

  Hitachi Information & Telecommunication Engineering

  BB Backbone Corporation(BBB)

3. Test site:

  1A Meeting room, ARIB

4. Test organization

XGP Forum(TWG-AdHoc 22 SWG for sXGP-AdHoc TG for interconnectivity) recruited participating companies and implemented the test.

5. Test Method

Connection tests of all PBXes and sXGP method system were conducted in accordance with "IP-PBX - sXGP Inter-terminal Connection Test Guideline (Version 5)" and "PBX Telecom Server Inter Connection Test Guideline for sXGP Protocol Specification Terminal Connection (HATS-P-104-V5.0)" which is based on the former.

<System Configuration : Connection test of mid-call handover between APs across two EPCs>

 

6. Test Result

Result of connection test of mid-call handover between APs across two EPCs

As described below, 2 items were tested with a combination of 3 models of IP-PBXes from 3 vendors and sXGP equipment. Both of them passed the test.

 

<Equipment manufacturer>

sXGP Equipment manufacturer
Device Name
BB Backbone
EPC: Q-Core
Accuver Co., Ltd
AP: SC-120J2

 

IP-PBX Manufacturer
Device name
NEC Platforms, Ltd.
UNIVERGE SV9500CT
Oki Electric Industry Co., Ltd.(OKI)
DISCOVERY neo2
Hitachi Information & Telecommunication Engineering, Ltd
NETTOWER MX-01

 

<Test Results>

IP-PBX Manufacturer
sXGP terminal (mid-call)
AP handover across EPCs
(Terminal move/AP fail/AP busy/EPC fail)※1
Extension call after returning to AP range across EPC from outside sXGP terminal range ※2
NEC Platforms, Ltd.
OKI
Hitachi Information & Telecommunication Engineering

 

※1:Factors leading to mid-call handover between APs across two EPCs

※2:An out-of-range sXGP terminal returns within range (to the AP under the other EPC) and confirms extension call

 

7. Future Plan
The Access Test is going to be implemented continuously next year as well. We aim to supply products with high convenience for users.


Reference(Japanese only): 

一般社団法人 情報通信ネットワーク産業協会「IP-PBX – sXGP端末間接続試験」実施結果について(第5回)(2023年1月18日)