There are hundreds of SIP Trunk providers in the world, Hoiio is the one focusing on the Singapore market. Hoiio’s SIP Trunk is a reliable SIP trunking solution for better call quality at much lower call charges. SIP Trunk can be instantly purchased, upgrade, or downgraded as your need arises. You can also have a local presence in 60+ countries with our wide range of landline, mobile, toll-free, and golden DID numbers.

Benefits

● Simple setup and upgrade or downgradeActivation can be done within minutes regardless of your geographical location; no contract nor IT resources required. Adding more extension is equally simple and no advanced notice required.
● Cost-saving
You can purchase or upgrade the phone extension in smaller increments as required at much lower rates compared to traditional PSTN. Besides, long-distance calls or international calls are charged at local costs or even free if calls within our service users.

● DID in 60+ countries add-on
One SIP line can have different international or local DIDs, so you can have a local presence in multiple countries. We provide landline, mobile, toll-free, or golden DID numbers of more than 60 countries and also support number retention – port in numbers from Singtel.

● In-built security mechanism
SIP is equipped with many security tools such as Country whitelist, IP whitelist, TLS/SRTP, and fraud monitoring to protect your SIP from being compromised because we take security seriously.

● Trusted reliability with least downtime
With the highest quality routes and Tier 1 carrier with such popular Codecs as G.729, GSM, G.711A, G.711U, our SIP delivers solid reliability and backup measure to keep your phone up and run at all times.

Features

● Unlimited channels for concurrent calls.
● DID in 60+ countries add-on and number port in.
● Country whitelist, IP whitelist, TLS/SRTP.
● Connected device listing and dial plan setup.
● Backup line support for emergency situations.
● Compatibility with all SIP-enabled devices.
● Other apps integration (Call Tracking, Call Recording).

Mechanism

Connect the SIP trunk to an IP-PBX or IP phone or softphone and you can make and receive calls instantly as long as the device is connected to the Internet.

Common customer questions and responses

1. Why the domain is sip1.hoiio.com? Can I change it?

You can change the sip domain from sip1.hoiio.com to your own sip domain address by simply changing your domain setting. Insert sip1 before your domain, port to sip1.hoiio.com instead of our portal address *** .cloudfront.net and the sip domain will be changed to, for example, sip1.yourdomain.com

2. What are the advantages of SIP VoIP over Analog?

● Cost: SIP trunk is a more cost-effective communication compared to traditional PSTN in general. The scalability of SIP trunking allows you to upgrade the phone system in smaller increments as required at lower rates instead of purchasing more costly E1/T1 lines. Besides, long-distance calls or even international calls are charged at local costs or even free if calls within our service users. A single SIP line can serve a whole company, regardless of the size. Also, multi-site enterprises can use a single SIP account with different DID rather than multiple sub PRI connections.

● Custom geographical number, no more costly toll-free 1800: 1 SIP line can have different international or local DIDs, so you can have a local presence in multiple countries and hence, give you customers the feeling that you are right next door. Also, they can reach your company at local cost.

3. If I have EPABX, can I use SIP?

It depends on the type or model of the hardware but most EPABX cannot be used with SIP. However, you can check with your phone providers whether it is possible to install a voice gateway or SIP gateway to enable SIP trunking.

4. Do you have any security measures to avoid being hacked?

SIP is equipped with many security tools such as Country whitelist, IP whitelist, TLS/SRTP to protect your SIP from being compromised because we take security seriously.
● Country Whitelist: to narrow down the countries which your outbound calls can reach to. All the calls to the destinations not included in the whitelist will be automatically blocked. The feature helps to avoid international calls in case of being hacked. In most hack cases, hackers use your numbers to call out to their overseas premium numbers that unreasonably overcharge. Hence, the Country whitelist is a highly useful feature of our SIP service.

● The IP Whitelist: to defines the IP addresses which can make calls via your SIP. If the IP address is one of the recognized IP address in the whitelist, the call gets through. If not, the call gets rejected.