Compass International Co., Ltd China
- Hosted VoIP billing service provider
- International VoIP Wholesale Provider
- VoIP Billing Software Provider
- Termination
- Cisco Systems
- another
Cisco 6921 is inexpensive business class IP phone model supporting video connection (Cisco UC Phone 6921, Standard Handset).
Cisco 6921 IP phone supports up to 2 lines has full-duplex loudspeaker, supports call holding on each line, hold, transfer, conference keys, tricolor indication of line condition, functional keys for simplified use of IP phone functions.
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