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IP Office offers a comprehensive list of features and benefits for the small or mid-size business, including:  


Full PBX Features
Caller ID, Call Forwarding, Conference Calling, Voice Messaging and more.
Trunk Interfaces
A variety of network trunk interfaces, including E1, T1, PRI, ISDN, SIP, analog loop start and analog ground start for comprehensive network connectivity. Not all trunk types are available in all territories, please check for local availability.
Support for a range of extensions, from 2 to 384 that provide sophisticated voice performance for new and growing businesses.
A variety of telephones including analog, digital and IP hard and softphones (wired and wireless) that provide the appropriate desktop or device telephone for every need.
Advanced Call Routing
Incoming calls are directed to the best available person or messaging service, according to the company's unique criteria.
Alternate Call Routing
Ensures reliable handling of calls by selecting from analog, digital or VoIP trunks.
QSIG Networking
Standards-based multi-site networking to interoperate with other PABXs (licensed feature).
Integrated H.323 and SIP Gatekeeper and Gateway for Converged Communications
The IP Office acts as an IP telephony server with Quality of Service (QoS) support through DiffServ for call routing.
SIP Trunking
SIP trunking to Internet Telephony Service Providers. IP Office allows users with non-SIP telephones to make and receive SIP trunk calls.