SIP-DECT
Powerful Features and Performance in a SIP based DECT Enterprise Mobility Solution
Frequently asked questions
What is Aastra SIP-DECT™?
SIP-DECT is Aastra’s multi-cell roaming mobility solution for SIP standard VoIP environments. The solution consists of
- Enterprise grade DECT handsets
- DECT access points with Ethernet ports for IP connection (RFP)
- OpenMobility Manager software (OMM)
The handsets communicate with the access points using the proven and robust DECT standard and the OMM communicates with the PBX or phone service using the industry standard SIP protocol. The OMM software runs on one of the access points so that no additional hardware is required.
What is DECT?
DECT stands for Digital Enhanced Cordless Telecommunications. It is an international standard technology that is reliable, robust and secure. It can be deployed as a multi-cell solution that allows for automatic, seamless and secure handover between access points.
What is DECT 6.0?
DECT 6.0 is the North-American version of DECT technology, recently approved by the Federal Communications Commission (FCC). It uses the frequency band of 1920 - 1930 MHz.
How is it DECT different from WiFi?
DECT is designed for voice whereas WiFi is designed for Data. DECT has native support for inter-cell handover and power management. Voice over WiFi requires software applications to achieve inter-cell handover and currently has no power management capabilities resulting in lower talk and standby times. Encryption over WiFi requires overhead and bandwidth resulting in added latency. DECT also has a much larger range than a typical WiFi access point.
Will DECT interfere with my WiFi network?
WiFi uses the crowded 2.4 GHz frequency but DECT avoids this by using the 1.9GHz frequency band.
How much of my IP network’s bandwidth will SIP-DECT use?
The IP network usage will depend on the type of Codec you decide to use. Aastra SIP-DECT™ supports G.711, G.729AB and G.723. Here are the typical bandwidth requirements per simultaneous conversation:
G.711 – 176 Kbps
G.729 – 64 Kbps
G.723 – 44 Kbps
What is the range of the Aastra DECT handset?
Handsets have a maximum range of 300m outdoors. Indoor range will vary depending on the number of walls and type of construction. Typical indoor range is 100m.
What is roaming?
Roaming is the ability to move beyond the range of a single access point while the handset is in use. Just like a cell phone, the DECT handsets seamlessly hand-off from one access point to another as you travel around your campus.
How scalable is the system?
Growing your system is easy. Simply add access points and handsets as you need. Currently, we support up to 256 access points and up to 512 handsets.
How many handsets can each access point handle?
Each access point has 12 signalling channels and can handle up to 8 simultaneous conversations but the access point can register up to 256 handsets. If you need more capacity in one area, simply add another access point.
What PBX systems are compatible with Aastra SIP-DECT™?
Any enterprise PBX system that supports standard SIP or any hosted SIP-based service should interoperate with Aastra SIP-DECT™.
What are the talk times and standby times?
The handsets can last for approximately 12 hours talk time and 120 hours standby. These numbers will vary under different usage patterns. The phones come with their own charging cradles and are completely recharged in less than 6 hours.
How durable are the Aastra handsets?
Aastra produces enterprise grade phones with durability in mind. DECT 142 handset phones safely resist drops of 4.9 ft (1.5m).-as per ETSI IEC 60068-2-32 standard. The MTBF rating is 20 years.
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