YES and TPG Launch VoLTE Roaming In SE Asia
The YES and TPG VoLTE Roaming solution is the first in Southeast Asia, and another milestone for YES, who was also the first in Malaysia to deliver VoLTE nationwide in June 2016. VoLTE Roaming In SE Asia
As the 4th national telecommunications operator in Singapore, TPG is eager to break-out ahead of the competition. They have thus become the first in Southeast Asia to launch outbound VoLTE roaming.
VoLTE roaming will ensure high definition (HD) quality voice services, as well as other benefits like faster call connections, longer battery life and enhanced security.
YES To Accept Inbound TPG VoLTE Roaming Traffic VoLTE Roaming In SE Asia
With the sole all-IP, all-4G LTE network in Malaysia, YES is a natural partner for TPG to receive inbound VoLTE traffic from TPG.
With this announcement, TPG subscribers in Singapore will enjoy VoLTE roaming in Malaysia, and YES subscribers in Malaysia will enjoy VoLTE roaming in Singapore.
On top of that, TPG Acting CEO Richard Tan announced that many TPG subscribers will enjoy FREE unlimited data roaming in Malaysia on the YES network during the promotion period.
Voice over LTE (VoLTE) Roaming provides the ability to extend IP Multimedia Subsystem (IMS) applications outside of a user’s serving area. Voice over LTE (VoLTE) Peering and Interconnect define how two different network operators interwork in order to deliver end-to-end IMS services.
The guidelines for standardized VoLTE roaming and interworking have been outlined within the GSMAs Permanent Reference Document (PRD) IR.65. The document describes three reference architectures for IMS Roaming. Two of these implementations define an arrangement where calls are broken-out locally (Local Breakout or LBO), these are LBO Home Routing (LBO-HR) and LBO Visitor Routing (LBO-VR). These two LBO models are often referred to, collectively, as the Roaming Architecture for Voice over LTE with Local Breakout, or RAVEL. The third option is S8 Home Routing (S8HR), where S8 is a standard reference interface between the Serving Gateway (SGW) and the Packet Data Network (PDN) Gateway (PGW).
Employing the model outlined within the GSMA’s IR.88 PRD, which provides guidelines for LTE Roaming, S8HR is recognized as the easiest to implement and has therefore been used in most early VoLTE Roaming implementations. With all media traffic traversing the home network, however, it has been widely acknowledged S8HR calls may suffer from intolerable delays. It is also understood that S8HR calls falling back to 3G, using Enhanced Single Radio Voice Call Continuity (eSRVCC) techniques, will fail. There are also open questions related to lawful interception and emergency calling.
