Yealink SIP-T48G Administrator's Manual page 866
Sip-t2 series; t4 series
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Also See for SIP-T48G:
- Administrator's manual (625 pages) ,
- User manual (270 pages) ,
- Quick start manual (45 pages)
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Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
3.
User A places User B on hold.
User A
F9. INVITE B (sendonly)
846
Proxy Server
F1. INVITE B
F4. 180 Ringing
F6. 200 OK
F7. ACK
2-way RTP channel established
F12. 200 OK
F13. ACK
No RTP packets being sent
F2. INVITE B
F3. 180 Ringing
F5. 200 OK
F8. ACK
F10. INVITE B (sendonly)
F11. 200 OK
F14. ACK
User B
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