UCM6102 & 6104 Overview

Grandstream UCM 6102 VoIP Appliance Overview

Grandstream UCM6104 IP PBX appliance.

updated 12/19/18 The Grandstream UCM6102 (and 6104) is an easy to manage IP PBX appliance with advanced features. Low in price, but still big on quality and features, it is designed for the small to medium business market that wants a full IP voice solution. Having a core Asterisk platform with a very user friendly (FreePbx like) styled GUI, it gives users an intuitive straight forward way to configure call features with on screen help, if needed. The 6102 appliance comes with 2 FXS and 2 FXO Ports built in, with larger models like the 6104 offering more ports (4), if needed. The UCM 6100 series PBXs include advanced voice, video and data features without any additional licensing or software fees.

From Grandstream: UCM61xx EOL notice: Firmware 1.0.18.x will be the last supported firmware for UCM61xx. UCM61xx will no longer receive new features, but will continue to receive critical security updates and major bug fixes.

The UMC6100 series PBX appliance family supports up to 500 users and 30 concurrent calls, along with 3 conference bridges and 25 conference participants. They come with a LAN/WAN Gigabit network port with integrated POE, can support up to 50 SIP trunk accounts with flexible call routing control, and (depending on model) has built-in 2 FXS ports for fax or analog phones and 2 FXO ports for traditional CO or POTS lines. The large 4GB onboard Flash memory makes this appliance very robust and it can be setup with peering for multiple site deployment.

UCM Update newsNote: The ucm6100 series has been replaced by the ucm6200 series.

UCM61xx available.The UCM6202 and UCM6204 are both still available for purchase at very good prices. Grandstream has announced the EOL for the 61xx series IP-PBXs, however are still very popular and in demand.


The UCM6102 comes with well designed setup features to make installation a breeze, like automated discovery and Zero Configuration smart provisioning of various SIP endpoints, such as IP phones and IP cameras. All designed to enable quick easy installation and operation without the burden of a long and involved training period. Additionally, many on-line resources are available as helpful guides, as well as excellent documentation and support from the manufacturer. The UCM6102 is well matched with Grandstream's GXP SIP phones however, one can any of the vast majority of SIP phones and other SIP devices that are on the market. Setting up connections to VoIP providers as well as SIP trunks with the major Internet telephony service providers is quick and straight forward.


Grandstream UCM6102 Features and Functions:
  • Analog Telephone FXS Ports - 2 ports
  • PSTN Line FXO Ports - 2 ports
  • Network Interfaces - Dual 10M/100M/1000M RJ45 Ethernet ports with integrated PoE Plug
  • Peripheral Ports - USB, SD
  • Voice and Fax Codecs - G.711 A-law/U-law, G.722, G.723.1 5.3K/6.3K, G.726,G.729A/B, iLBC, GSM; T.38
  • Video Codecs - H.264, H.263, H.263+
  • Network Protocols - TCP/UDP/IP, RTP/RTCP, ICMP, ARP, DNS, DDNS, DHCP, NTP, TFTP, SSH, HTTP/HTTPS, PPPoE, SIP (RFC3261), STUN, SRTP, TLS
  • Features -
    • Voicemail
    • IVR (Attendant); Dial By Name, Language settings for Voice Prompts
    • Music on Hold
    • Ring/Hunt Groups, Extension Groups, Pickup Groups, Call Park, Call Forward, Call Transfer, DND, etc.
    • Call Features- Feature Codes, Call Recording, Call Park
    • Paging and Intercom Group
    • Fax/T38
    • Status and Reporting

See what others are saying about Grandstream's UCM Asterisk Phone System.

Grandstream UCM6102 Pbx Reviews


UCM 6100 Series How-to's

Grandstream UCM6102 User Manual

Setting up a UCM Appliance

Voice Prompt Customization on UCM61xx

The following guide introduces the permission and privilege settings on the UCM6100 series IP PBX. The four levels of permission and privilege settings are used to control the calls on extension, IVR, inbound route and outbound route so that calls are handled securely as desired.

Configuring Permissions & Privilege Levels


Use the these instructions when setting up satellite offices.

Peering UCM to UCM Appliances

Grandstream Security Bulletin UCM001

Grandstream Security Bulletin UCM002

Grandstream UCM Security Manual