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Description
Grandstream GRP2615 10-line Carrier Grade IP PhoneThe Grandstream GRP2615 is a high end carrier grade IP phone designed with zero touch provisioning for mass deployment and easy management. It supports 10 lines and 5 SIP accounts while featuring a sleek design and a suite of next generation features including integrated Wi Fi, Bluetooth support, 40 multi purpose keys (MPKs), an available extension module, dual Gigabit ports and more. This device features a large 4. 3 inch color LCD with swappable
The Grandstream GRP2615 is a high-end carrier-grade IP phone designed with zero-touch provisioning for mass deployment and easy management. It supports 10 lines and 5 SIP accounts while featuring a sleek design and a suite of next-generation features including integrated Wi-Fi, Bluetooth support, 40 multi-purpose keys (MPKs), an available extension module, dual Gigabit ports and more. This device features a large 4.3 inch color LCD with swappable face plates to allow for easy logo customization. The GRP series includes carrier-grade security features to provide enterprise-level security, including secure boot, dual firmware images and encrypted data storage. For cloud provisioning and centralized management, the GRP2615 is supported by Grandstream’s Device Management System (GDMS), which provides a centralized interface to configure, provision, manage and monitor deployments of Grandstream endpoints. Built for the needs of busy desktop workers and designed for easy deployment by enterprises, service providers and other high volume markets, the GRP2615 offers an easy-to-use and easy-to-de ploy voice platform.
Product Features:
- HD audio, handset and speakerphone with support for wide-band audio
- 10 line keys with up to 5 SIP accounts
- 40 built-in digital BLF keys; available extension module offers 40 BLF/speed dial keys per module
- Enterprise-level protection including secure boot, dual firmware images, and encrypted data storage
- Integrated dual-band Wi-Fi 802.11 a/b/g/n/ac (2.4Ghz & 5Ghz)
- Dual switched auto-sensing 10/100/1000 Mbps Gigabit Ethernet ports with integrated PoE
- Swappable face plates to allow for easy logo customization
- Integrated Bluetooth
- Protocols/Standards: SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS(A record, SRV, NAPTR), DHCP, PPPoE, TELNET, TFTP, NTP, STUN, SIMPLE, LLDP, LDAP, TR-069, 802.1x, TLS, SRTP, IPV6
- Network Interfaces: Dual switched auto-sensing 10/100/1000 Mbps Gigabit Ethernet ports with integrated PoE
- Graphic Display: 4.3 inch (480x272) TFT color LCD
- Bluetooth: Yes, integrated
- Wi-Fi: Yes, integrated dual-band Wi-Fi 802.11 a/b/g/n/ac (2.4Ghz & 5Ghz)
- Auxiliary Ports: RJ9 headset jack (allowing EHS with Plantronics headsets), USB
- Feature Keys: 10 line keys with up to 5 SIP accounts, 5 XML programmable context sensitive softkeys, 5 navigation/menu keys, 9 dedicated function keys for: MESSAGE(with LED indicator), TRANSFER, HOLD, HEADSET, MUTE, SEND/REDIAL, SPEAKERPHONE, VOL+, VOL-
- Voice Codecs and Capabilities: Wide-band Opus, wide-band G.722, G.711μ/a, G. 729A/B, G.726-32, iLBC, in-band and out-of-band DTMF (In audio, RFC2833, SIP INFO), VAD, CNG, AEC, PLC, AJB, AGC, ANS
- Video Codecs and Capabilities: Support for G7.29A/B, G.711μ/a-law, G.726, G.722(wide-band), G723, iLBC, OPUS, in-band and out-of-band DTMF(in audio, RFC2833, SIP INFO)
- Telephony Features: Hold, transfer, forward, 3-way conference, call park, call pickup, shared-call-appearance(SCA)/bridged-line-appearance(BLA), downloadable phonebook(XML, LDAP, up to 2000 items), call waiting, call log(up to 2000 records), XML customization of screen, off-hook auto dial, auto answer, click-to-dial, flexible dial plan, hot-desking, personalized music ringtones and music on hold, server redundancy and fail-over
- Extension Module: Yes (GBX20)
- HD Audio: Yes, HD handset and speakerphone with support for wideband audio
- Base Stand: Yes, 2 angle positions available, Wall Mountable (*wall mount sold separately)
- QoS: Layer 2 QoS (802.1Q, 802.1P) and Layer 3 QoS (ToS, DiffServ, MPLS)
- Security: User and administrator level passwords, MD5 and MD5-sess based authentication, 256-bit AES encrypted configuration file, SRTP, TLS, 802.1x media access control, secure boot
- Operating Temperature: 0°C to 40°C
- Operating Storage: -10°C to 60°
- Humidity: 10% to 90% Non-condensing
(1) GRP2615 IP phone
(1) Handset
(1) Phone stand
(1) 12V Power Adapter
(1) Ethernet cable
(1) Phone cord
(1) Quick installation guide
(1) GPL license
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4.2 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Thought Provoking
Format: Kindle
I bought this book after I heard the author on a podcast. Growing up in the US we have been inundated with the story that the collapse of the Soviet Union was an inevitable triumph of liberal, Western values. I had my doubts. Even poorly run dictatorships can muddle along for years. What the author did was center Gorbachev in the story. He was the eye of the storm. It was the terrible combination of Gorbachev’s ambitious idealism and gross ineptitude that led to the dismantling of the Soviet Union. Unlike much of Marxist historical narratives which emphasize the forces of history; the author shows that it’s individuals who shape events and are shaped by them. A different person than Gorbachev could have turned the tide in a different direction and left us a different world than we have today. This is a history book that teaches lessons not just about the Soviet Union but about human history in general.
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Reviewed in the United States on August 1, 2025
★★★★★ 5
A compelling account of the fall of the USSR
Format: Kindle
Zubok describes blow by blow the series of decisions that sent the USSR towards disaster. Gorbachev, widely hated in Russia, comes across as principled but indecisive, ignorant of economics, and incapable of translating his worship of Lenin into coherent action. The book reads like a thriller despite the density of facts. Zubok is a pessimist, but his thesis is convincing.
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Reviewed in the United States on May 21, 2024
★★★★★ 5
Fascinating, an against the grain account of the perestroika era
Format: Kindle
Gorbachev is hailed as a hero in the West but the book tells the story of a meek, naive individual that precipitated the fall of the Soviet Union creating suffering and an a!most unprecedented calamity.
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Reviewed in the United States on December 19, 2025
★★★★★ 2
A masterfully falsified history of the late Soviet developments
Format: Paperback
This book represents academic propaganda, providing some interesting insights into important events. Some details are true, but some crucial details are omitted. It represents a sanitized version of Russia's modern history. It provides misleading information about Gorbachev's constitutional reforms, aimed at partitioning of 15 republics into 53 confederation entities. Originally, the targeted republics were Kazakhstan, Moldova, Georgia, Azerbaijan, Ukraine, etc. Those conflicts were manufactured by the Soviet center to discredit "nationalists," facilitate the partition of national republics, and grant Moscow right to protect ethnic minorities. According to Starovoitova, Bakatin, Yakovlev, and a few other primary sources, the Soviet security services led special operations in the Caucasus and Central Asia to provoke those conflicts. Zubok avoids citing those parts. Using the imperial approach of "divide and rule," Moscow attempted to become a peacekeeper in the conflicts it created between different ethnicity.
In addition to fragmenting the republics with well-developed national identities, Gorbachev's new constitution would revoke their right to leave the USSR, written in Lenin's 1922 Constitution (Shakhnazarov, 1992). Zubok does not explain any of it. His book is an effort to protect the truth and conceal facts with Russian myths and lies about nationalism (also referred to as Nazism). Notably, Zubok does not recognize non-Russian republics and describes them as "territories." He mentions Pitsunda as a resort on the Black Sea, not as Georgia. For lying about the genocidal ethnic cleansing conducted by the Russian military against the Georgian population of Abkhazia, Zubok owes apology to the victims of conflicts and wars initiated by Gorbachev and carried on by Yeltsin.
The story about "the hardliners coup against Gorbachev" is also a big fat lie. American scholars, Amy Knight, John Dunlop, and William Odom provide more accurate insights. For Russian sources, read Marshal Shaposhnikov or Aleksandr Lebed's memoirs (1995) and listen to Gennady Yanaev's interview (2009). According to Mitrokhin archives (original), the August 1991 coup was an active measure the KGB developed per Gorbachev's request. The so-called coup was part of Gorbachev's constitutional reform, which would lead to the removal of unfriendly leaders (including Yeltsin) from the republics. It failed because the Soviet military brass, foremost Pavel Grachev, had defected to Yeltsin earlier in 1991. When you read a book by a seasoned Russian propagandist, like Zubok or Trenin, take it with a grain of salt, because it will always contain a mix of lies and truth.
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Reviewed in the United States on March 16, 2023
★★★★★ 5
An important work and worth the time.
Format: Hardcover
Real scholarship addressing difficult but important topics in history, economic history, and development. What every economist should read to think much more deeply about how institutions, culture, and human agency interact. At the same time, scholars like the three co-authors demonstrate that there still remains the possibility of doing work that isn’t larded with ideological or activist posturing. Highly recommended.
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Reviewed in the United States on May 5, 2026