How to Configure a Grandstream UCM PBX and IP Phone

Connect and discover the UCM

1. Connect the UCM LAN port to the office switch or router and apply power.
2. Read the assigned IPv4 address from the front LCD.
3. From a computer on the same trusted LAN, open https://UCM IP address.
4. Verify that the browser address matches the device before continuing past any local certificate warning.

Sign in and secure the administrator account

Use the administrator name and the unique initial password printed on the unit label or supplied with the device.

• Change the administrator password immediately.
• Use a long, unique password stored in a business password manager.
• Create named administrator accounts with the minimum required privileges instead of sharing one login.

Update firmware and save a baseline backup

1. Check the exact model and current firmware.
2. Read the official release notes before upgrading.
3. Upgrade during a maintenance window and do not interrupt power.
4. After reboot, confirm services and create the first configuration backup.

Configure network, time and email

• Assign a reserved DHCP lease or static IP outside the dynamic pool.
• Enter the correct gateway, DNS and NTP servers.
• Set the time zone to Asia/Karachi for Pakistan deployments.
• Configure SMTP so voicemail, alerts and user welcome emails can be delivered.

Create extensions and user permissions

1. Create a SIP extension for each person, room or service.
2. Use a unique random SIP password for every extension.
3. Add the user's display name and email address.
4. Set the extension's outbound privilege level and voicemail policy.
5. Avoid predictable credentials such as extension 1001 with password 1001.

Provision Grandstream IP phones

1. Connect each supported Grandstream phone to the voice network and PoE switch.
2. Discover the phone, identify its MAC address and assign the correct extension.
3. Apply a model or group template for keys, codec preference, time and firmware.
4. Update or reboot the phone, then confirm that its account shows registered.

Connect a SIP, analog or GSM trunk

• For SIP, enter only the carrier supplied registrar, authentication, transport and caller ID values.
• For analog lines, connect the line to an FXO port and tune regional line parameters.
• For GSM or SIM service, connect a compliant SIP GSM gateway and follow local operator requirements.

Build outbound routes

1. Create explicit dial patterns for local, mobile, national and international calls.
2. Select the intended trunk and configure strip or prepend rules only when needed.
3. Match route privilege with each extension's privilege level.
4. Add a controlled backup trunk if business continuity requires it.

Build inbound routes

1. Map each DID, SIP trunk or analog line to the required destination.
2. Use separate destinations for office hours, after hours and holidays.
3. Choose an IVR, ring group, queue, extension or voicemail destination.
4. Test the route from an external phone and verify the presented caller ID.

Create IVR, ring groups and queues

• Upload clear prompts and keep menu choices short.
• Give callers a valid timeout and invalid entry destination.
• Use ring groups for simple team ringing and queues for managed agent distribution.
• Define overflow so calls never end in a dead route.

Enable Wave and remote connectivity

1. Link the UCM6300 to GDMS and configure UCM RemoteConnect where required.
2. Enable Wave access only for approved users.
3. Send the user welcome or QR provisioning information through a trusted channel.
4. Test from mobile data outside the office WiFi, including audio in both directions.

Test, document and back up

• Test internal, inbound, outbound, transfer, hold, voicemail and emergency scenarios.
• Confirm two way audio and DTMF through every trunk.
• Record the IP plan, extensions, routes, licences, support contacts and recovery process.
• Schedule encrypted backups and test that a backup can be restored.