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

XGP Forum (office located in Tokyo, Japan. Chairperson: Hideyuki Iwata) has revised "Guideline for Connection Test of sXGP System" and conducted the sharing test of sXGP System and PHS System in expanded 5MHz frequency band and the connection test with a combination of the sXGP method equipment of the multi-vendors. 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

 

This time, we have revised the guidelines by adding sharing test item of sXGP system with other wireless system (PHS system) in expanded 5MHz frequency band.

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:

  (1) Connection test of multi-vendors` sXGP compliance equipment: November 9, November 11, 2021

  (2) Sharing test of sXGP System with PHS system in expanded 5MHz frequency band: November 1st~12, 2021

2.Participating Company(Random order)

  Accuver Co., Ltd(Accuver)

  IWATSU ELECTRIC CO., LTD

  NEC Platforms, Ltd

  Oki Electric Industry Co., Ltd.(OKI)

  NAKAYO, Ltd

  Hitachi Information & Telecommunication Engineering

  BB Backbone Corporation(BBB)

  FUJITSU LIMITED

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 4)" and "PBX Telecom Server Inter Connection Test Guideline for sXGP Protocol Specification Terminal Connection (HATS-P-104-V4.0)" which is based on the former.

<System Configuration : Connection test of multi-vendors` sXGP compliance equipment>

 

<System Configuration: Sharing test of sXGP System with PHS System in expanded 5MHz frequency band>

 

6. Test Result

(1)Result of connect test with multi-vendors` sXGP compliance equipment

As described below, 10 items (including some option items) were tested with a combination of two models of IP-PBXes from 2 vendors and 1 newly added sXGP equipment (EPC, AP) from 1 vendor. Besides, 2 items of sharing test of sXGP System and PHS System in the expanded 5MHz frequency band were tested. All of them passed the test.

 

<Equipment manufacturer>

Equipment manufacturer
Device Name
NEC Platforms, Ltd
sXGP system

 

IP-PBX Manufacturer
Device name
Hitachi Information & Telecommunication Engineering, Ltd
NETTOWER MX-01
FUJITSU LIMITED
LEGEND-V S100

 

<Test Results>

IP-PBX Manufacturer
Incoming & Outgoing of Extension
Transfer
Terminal Move
Sub-normal processing at false mode※2
Handover ※1
Out-cell movement
In-cell return
AP
EPC
IP-PBX
Hitachi Information & Telecommunication Engineering
FUJITSU

 

IP-PBX Manufacturer
RFI of PHS during the call of sXGP terminal
Incoming & Outgoing of PHS extension by carrier sense of sXGP
Hitachi Information & Telecommunication Engineering
FUJITSU

 

IP-PBX Manufacturer
Start PHS System during the call of sXGP terminal
(Test in expanded frequency band)※3
Incoming & Outgoing of PHS extension by carrier sense of sXGP
(Test in expanded frequency band)※3
Hitachi Information & Telecommunication Engineering
FUJITSU

 

※1:Confirmation of the handover of one ongoing voice call during the sXGP terminal movement between different APs.

※2:Sub-normal: Confirmation of AP fault, terminal release by EPC / PBX reset

※3:Expanded frequency band uses F1 or F2

 

(2)Sharing test of sXGP System and PHS System in expanded 5MHz frequency band

As described below, 2 items of sharing test of sXGP System and PHS System in expanded 5MHz frequency band with a combination of 6 kind of IP-PBX/business phones from 6 vendors and sXGP compliance equipment were conducted. All of them passed the test.

The HATS Forum will issue a "Certificate of Acceptance" to those companies that have passed the test and are also participating in the HATS Forum.

 

<Equipment manufacturer>

sXGP equipment vendor
Device Name
BB Backbone Corporation(Supplier)
EPC: Q-Core
Accuver Co., Ltd
AP: SC-120J

 

IP-PBX/Business Phone Manufacturer
Device Name
IWATSU ELECTRIC CO., LTD
Frespec
NEC Platforms, Ltd
UNIVERGE SV9500
Oki Electric Industry Co., Ltd.(OKI)
DISCOVERY neo
NAKAYO, Ltd
NYC-Si
Hitachi Information & Telecommunication Engineering
NETTOWER MX-01
FUJITSU LIMITED
LEGEND-V S100

 

<Test Results>

IP-PBX/Business Phone Manufacturer
Start PHS System during call of sXGP terminal
(Test in expanded frequency band)※1
Incoming & Outgoing of PHS extension by carrier sense of sXGP
(Test in expanded frequency band)※1
IWATSU ELECTRIC
NEC Platforms
OKI
NAKAYO
Hitachi Information & Telecommunication Engineering
FUJITSU

※1:Expanded frequency band uses F1 or F2

 

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/ビジネスホン – sXGP端末間接続試験」実施結果について(第4回)(2022年1月26日)